{"product_id":"open-box-fisher-cz21-10-10-coil","title":"Open Box Fisher CZ21-10 - 10\" Coil","description":"\u003cdiv class=\"mds-cz21-page\"\u003e\n\u003csection class=\"mds-cz21-info-card\"\u003e\n\u003ch2\u003eOpen Box — Looks Unused\u003c\/h2\u003e\n\u003cp\u003eThis Fisher CZ21-10 with 10-inch coil is an open-box unit that looks unused.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e\n\u003cstyle\u003e\n    .mds-cz21-page {\n      --mds-blue: #2f5294;\n      --mds-dark: #172033;\n      --mds-light: #f5f7fb;\n      --mds-border: #dfe5ef;\n      --mds-muted: #5d6677;\n      max-width: 1150px;\n      margin: 0 auto;\n      padding: 20px 16px 40px;\n      font-family: Arial, Helvetica, sans-serif;\n      color: var(--mds-dark);\n      line-height: 1.6;\n      box-sizing: border-box;\n    }\n\n    .mds-cz21-page *,\n    .mds-cz21-page *::before,\n    .mds-cz21-page *::after {\n      box-sizing: border-box;\n    }\n\n    .mds-cz21-page h2,\n    .mds-cz21-page h3,\n    .mds-cz21-page p {\n      margin-top: 0;\n    }\n\n    .mds-cz21-hero {\n      display: grid;\n      grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);\n      gap: 34px;\n      align-items: center;\n      padding: 28px;\n      background: linear-gradient(135deg, #f5f7fb 0%, #ffffff 100%);\n      border: 1px solid var(--mds-border);\n      border-radius: 18px;\n      overflow: hidden;\n    }\n\n    .mds-cz21-hero-image {\n      text-align: center;\n      min-width: 0;\n    }\n\n    .mds-cz21-hero-image img {\n      display: block;\n      width: 100%;\n      max-width: 560px;\n      height: auto;\n      margin: 0 auto;\n      border-radius: 14px;\n      object-fit: contain;\n    }\n\n    .mds-cz21-eyebrow {\n      display: inline-block;\n      margin-bottom: 10px;\n      padding: 6px 12px;\n      background: var(--mds-blue);\n      color: #ffffff;\n      border-radius: 999px;\n      font-size: 13px;\n      font-weight: 700;\n      letter-spacing: 0.3px;\n      text-transform: uppercase;\n    }\n\n    .mds-cz21-hero h2 {\n      margin-bottom: 14px;\n      font-size: clamp(28px, 4vw, 43px);\n      line-height: 1.12;\n      color: var(--mds-dark);\n    }\n\n    .mds-cz21-subtitle {\n      margin-bottom: 22px;\n      color: var(--mds-muted);\n      font-size: 18px;\n      line-height: 1.65;\n    }\n\n    .mds-cz21-hero-points {\n      display: grid;\n      grid-template-columns: repeat(2, minmax(0, 1fr));\n      gap: 10px;\n      margin-top: 22px;\n    }\n\n    .mds-cz21-hero-point {\n      padding: 13px 14px;\n      background: #ffffff;\n      border: 1px solid var(--mds-border);\n      border-radius: 12px;\n      font-size: 14px;\n      font-weight: 700;\n      text-align: center;\n    }\n\n    .mds-cz21-coil-callout {\n      margin-top: 18px;\n      padding: 15px 17px;\n      background: #fff8e7;\n      border: 1px solid #ead8a9;\n      border-radius: 12px;\n      color: #4e4021;\n      font-size: 15px;\n    }\n\n    .mds-cz21-section {\n      margin-top: 34px;\n    }\n\n    .mds-cz21-section-heading {\n      margin-bottom: 18px;\n      text-align: center;\n    }\n\n    .mds-cz21-section-heading h2 {\n      margin-bottom: 8px;\n      font-size: clamp(25px, 3vw, 34px);\n      line-height: 1.2;\n      color: var(--mds-dark);\n    }\n\n    .mds-cz21-section-heading p {\n      max-width: 760px;\n      margin: 0 auto;\n      color: var(--mds-muted);\n      font-size: 16px;\n    }\n\n    .mds-cz21-overview {\n      padding: 28px;\n      background: #ffffff;\n      border: 1px solid var(--mds-border);\n      border-radius: 16px;\n    }\n\n    .mds-cz21-overview p:last-child {\n      margin-bottom: 0;\n    }\n\n    .mds-cz21-feature-grid {\n      display: grid;\n      grid-template-columns: repeat(3, minmax(0, 1fr));\n      gap: 16px;\n    }\n\n    .mds-cz21-feature-card {\n      height: 100%;\n      padding: 22px;\n      background: var(--mds-light);\n      border: 1px solid var(--mds-border);\n      border-radius: 15px;\n    }\n\n    .mds-cz21-feature-icon {\n      display: flex;\n      align-items: center;\n      justify-content: center;\n      width: 46px;\n      height: 46px;\n      margin-bottom: 15px;\n      background: var(--mds-blue);\n      color: #ffffff;\n      border-radius: 12px;\n      font-size: 23px;\n    }\n\n    .mds-cz21-feature-card h3 {\n      margin-bottom: 8px;\n      font-size: 18px;\n      line-height: 1.3;\n      color: var(--mds-dark);\n    }\n\n    .mds-cz21-feature-card p {\n      margin-bottom: 0;\n      color: var(--mds-muted);\n      font-size: 15px;\n    }\n\n    .mds-cz21-split {\n      display: grid;\n      grid-template-columns: repeat(2, minmax(0, 1fr));\n      gap: 22px;\n    }\n\n    .mds-cz21-info-card {\n      padding: 26px;\n      background: #ffffff;\n      border: 1px solid var(--mds-border);\n      border-radius: 16px;\n    }\n\n    .mds-cz21-info-card h2 {\n      margin-bottom: 16px;\n      font-size: 25px;\n      line-height: 1.25;\n    }\n\n    .mds-cz21-check-list {\n      list-style: none;\n      margin: 0;\n      padding: 0;\n    }\n\n    .mds-cz21-check-list li {\n      position: relative;\n      margin-bottom: 12px;\n      padding-left: 29px;\n      color: var(--mds-muted);\n    }\n\n    .mds-cz21-check-list li:last-child {\n      margin-bottom: 0;\n    }\n\n    .mds-cz21-check-list li::before {\n      content: \"✓\";\n      position: absolute;\n      top: 0;\n      left: 0;\n      width: 20px;\n      height: 20px;\n      color: var(--mds-blue);\n      font-weight: 800;\n    }\n\n    .mds-cz21-image-section {\n      display: grid;\n      grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);\n      gap: 28px;\n      align-items: center;\n      padding: 28px;\n      background: var(--mds-light);\n      border: 1px solid var(--mds-border);\n      border-radius: 16px;\n    }\n\n    .mds-cz21-image-section img {\n      display: block;\n      width: 100%;\n      height: auto;\n      border-radius: 14px;\n    }\n\n    .mds-cz21-image-section h2 {\n      margin-bottom: 12px;\n      font-size: 28px;\n      line-height: 1.25;\n    }\n\n    .mds-cz21-image-section p {\n      margin-bottom: 0;\n      color: var(--mds-muted);\n    }\n\n    .mds-cz21-spec-grid {\n      display: grid;\n      grid-template-columns: repeat(2, minmax(0, 1fr));\n      gap: 12px;\n    }\n\n    .mds-cz21-spec {\n      display: flex;\n      flex-direction: column;\n      align-items: flex-start;\n      min-width: 0;\n      gap: 6px;\n      padding: 15px 17px;\n      background: #ffffff;\n      border: 1px solid var(--mds-border);\n      border-radius: 11px;\n    }\n\n    .mds-cz21-spec-label {\n      display: block;\n      flex-shrink: 0;\n      white-space: nowrap;\n      word-break: normal;\n      overflow-wrap: normal;\n      hyphens: none;\n      color: var(--mds-muted);\n      font-weight: 600;\n    }\n\n    .mds-cz21-spec-value {\n      display: block;\n      word-break: normal;\n      overflow-wrap: normal;\n      hyphens: none;\n      color: var(--mds-dark);\n      font-weight: 700;\n      text-align: left;\n    }\n\n    .mds-cz21-includes {\n      display: grid;\n      grid-template-columns: repeat(4, minmax(0, 1fr));\n      gap: 14px;\n    }\n\n    .mds-cz21-included-item {\n      padding: 20px 16px;\n      background: var(--mds-light);\n      border: 1px solid var(--mds-border);\n      border-radius: 14px;\n      text-align: center;\n      font-weight: 700;\n    }\n\n    .mds-cz21-faq {\n      display: grid;\n      gap: 12px;\n    }\n\n    .mds-cz21-faq details {\n      background: #ffffff;\n      border: 1px solid var(--mds-border);\n      border-radius: 12px;\n      overflow: hidden;\n    }\n\n    .mds-cz21-faq summary {\n      position: relative;\n      padding: 18px 48px 18px 18px;\n      cursor: pointer;\n      color: var(--mds-dark);\n      font-weight: 700;\n      list-style: none;\n    }\n\n    .mds-cz21-faq summary::-webkit-details-marker {\n      display: none;\n    }\n\n    .mds-cz21-faq summary::after {\n      content: \"+\";\n      position: absolute;\n      top: 50%;\n      right: 18px;\n      transform: translateY(-50%);\n      color: var(--mds-blue);\n      font-size: 25px;\n      font-weight: 400;\n    }\n\n    .mds-cz21-faq details[open] summary::after {\n      content: \"−\";\n    }\n\n    .mds-cz21-faq-answer {\n      padding: 0 18px 18px;\n      color: var(--mds-muted);\n    }\n\n    .mds-cz21-faq-answer p {\n      margin-bottom: 0;\n    }\n\n    .mds-cz21-cta {\n      margin-top: 34px;\n      padding: 30px;\n      background: #ffffff;\n      border: 2px solid var(--mds-blue);\n      border-radius: 16px;\n      text-align: center;\n    }\n\n    .mds-cz21-cta h2 {\n      margin-bottom: 10px;\n      font-size: 28px;\n      line-height: 1.25;\n      color: var(--mds-dark);\n    }\n\n    .mds-cz21-cta p {\n      max-width: 760px;\n      margin: 0 auto;\n      color: var(--mds-muted);\n      font-size: 16px;\n    }\n\n    .mds-cz21-note {\n      margin-top: 18px;\n      color: var(--mds-muted);\n      font-size: 13px;\n      text-align: center;\n    }\n\n    @media (max-width: 900px) {\n      .mds-cz21-hero,\n      .mds-cz21-image-section {\n        grid-template-columns: 1fr;\n      }\n\n      .mds-cz21-feature-grid {\n        grid-template-columns: repeat(2, minmax(0, 1fr));\n      }\n\n      .mds-cz21-includes {\n        grid-template-columns: repeat(2, minmax(0, 1fr));\n      }\n\n      .mds-cz21-image-section-content {\n        order: 1;\n      }\n\n      .mds-cz21-image-section-image {\n        order: 2;\n      }\n    }\n\n    @media (max-width: 650px) {\n      .mds-cz21-page {\n        padding: 12px 10px 30px;\n      }\n\n      .mds-cz21-hero,\n      .mds-cz21-overview,\n      .mds-cz21-info-card,\n      .mds-cz21-image-section,\n      .mds-cz21-cta {\n        padding: 21px 17px;\n      }\n\n      .mds-cz21-feature-grid,\n      .mds-cz21-split,\n      .mds-cz21-spec-grid {\n        grid-template-columns: 1fr;\n      }\n\n      .mds-cz21-hero-points {\n        grid-template-columns: 1fr;\n      }\n\n      .mds-cz21-spec {\n        display: block;\n      }\n\n      .mds-cz21-spec-value {\n        display: block;\n        margin-top: 4px;\n        text-align: left;\n      }\n    }\n\n    @media (max-width: 420px) {\n      .mds-cz21-includes {\n        grid-template-columns: 1fr;\n      }\n    }\n  \u003c\/style\u003e\n\u003cdiv class=\"mds-cz21-page\"\u003e\n\u003csection class=\"mds-cz21-hero\"\u003e\n\u003cdiv class=\"mds-cz21-hero-image\"\u003e\u003cimg src=\"https:\/\/firsttexasproducts.com\/cdn\/shop\/files\/CZ21-8JPG2048x2048x202503143.jpg?v=1741981468\u0026amp;width=1200\" alt=\"Fisher CZ-21 underwater metal detector with 10-inch searchcoil\" width=\"1200\" height=\"1200\" loading=\"eager\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"mds-cz21-hero-content\"\u003e\n\u003cspan class=\"mds-cz21-eyebrow\"\u003e10-Inch Coil Model\u003c\/span\u003e\n\u003ch2\u003eFisher CZ-21 Underwater Metal Detector\u003c\/h2\u003e\n\u003cp class=\"mds-cz21-subtitle\"\u003eA professional dual-frequency metal detector built for beaches, freshwater, saltwater, land hunting and serious underwater detecting at depths of up to 250 feet.\u003c\/p\u003e\n\u003cdiv class=\"mds-cz21-hero-points\"\u003e\n\u003cdiv class=\"mds-cz21-hero-point\"\u003eDual 5 kHz and 15 kHz\u003c\/div\u003e\n\u003cdiv class=\"mds-cz21-hero-point\"\u003eSubmersible to 250 Feet\u003c\/div\u003e\n\u003cdiv class=\"mds-cz21-hero-point\"\u003e3-Tone Audio Target ID\u003c\/div\u003e\n\u003cdiv class=\"mds-cz21-hero-point\"\u003e10-Inch Searchcoil\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"mds-cz21-coil-callout\"\u003e\n\u003cstrong\u003ePlease note:\u003c\/strong\u003e This listing is for the CZ-21 model with the larger 10-inch-class searchcoil. The searchcoil and waterproof headphones are permanently attached to maintain the detector’s underwater integrity.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection class=\"mds-cz21-section\"\u003e\n\u003cdiv class=\"mds-cz21-section-heading\"\u003e\n\u003ch2\u003eSerious Performance Above and Below the Water\u003c\/h2\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"mds-cz21-overview\"\u003e\n\u003cp\u003eThe Fisher CZ-21 is designed for treasure hunters who need reliable performance in demanding environments. Its waterproof control housing can be submerged to depths of up to 250 feet, making it suitable for scuba diving, shoreline hunting, surf detecting, freshwater recovery and searching wet saltwater beaches.\u003c\/p\u003e\n\u003cp\u003eUnlike a conventional single-frequency VLF detector, the CZ-21 simultaneously operates at 5 kHz and 15 kHz. The two frequencies provide additional target information and help the detector respond to a broad range of targets, from higher-conductive coins and silver to smaller and lower-conductive jewelry.\u003c\/p\u003e\n\u003cp\u003eThis 10-inch coil version provides increased ground coverage and is an excellent choice for hunters searching larger beaches, open swimming areas and underwater locations where covering more ground efficiently is important.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection class=\"mds-cz21-section\"\u003e\n\u003cdiv class=\"mds-cz21-section-heading\"\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cp\u003eDesigned for dependable target identification, deep searching and stable operation in difficult saltwater conditions.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"mds-cz21-feature-grid\"\u003e\n\u003cdiv class=\"mds-cz21-feature-card\"\u003e\n\u003cdiv class=\"mds-cz21-feature-icon\"\u003e≈\u003c\/div\u003e\n\u003ch3\u003eDual-Frequency Operation\u003c\/h3\u003e\n\u003cp\u003eSimultaneous 5 kHz and 15 kHz VLF frequencies provide additional target information for detecting coins, jewelry, relics and other valuables.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"mds-cz21-feature-card\"\u003e\n\u003cdiv class=\"mds-cz21-feature-icon\"\u003e💧\u003c\/div\u003e\n\u003ch3\u003eWaterproof to 250 Feet\u003c\/h3\u003e\n\u003cp\u003eThe fully submersible construction is made for beach hunters, shallow-water searchers and divers working in both freshwater and saltwater.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"mds-cz21-feature-card\"\u003e\n\u003cdiv class=\"mds-cz21-feature-icon\"\u003e🔊\u003c\/div\u003e\n\u003ch3\u003e3-Tone Target Identification\u003c\/h3\u003e\n\u003cp\u003eLow, medium and high audio tones help classify iron, foil, pull tabs, coins and jewelry without requiring a visual display.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"mds-cz21-feature-card\"\u003e\n\u003cdiv class=\"mds-cz21-feature-icon\"\u003e◎\u003c\/div\u003e\n\u003ch3\u003e10-Inch Searchcoil\u003c\/h3\u003e\n\u003cp\u003eThe larger concentric searchcoil offers efficient coverage for beaches, swimming areas and underwater locations while retaining precise pinpointing capability.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"mds-cz21-feature-card\"\u003e\n\u003cdiv class=\"mds-cz21-feature-icon\"\u003e⌖\u003c\/div\u003e\n\u003ch3\u003eV.C.O. Pinpoint Mode\u003c\/h3\u003e\n\u003cp\u003eThe no-motion pinpoint mode increases in pitch and volume as the center of the searchcoil approaches the target.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"mds-cz21-feature-card\"\u003e\n\u003cdiv class=\"mds-cz21-feature-icon\"\u003e⚙\u003c\/div\u003e\n\u003ch3\u003eManual Ground Balance\u003c\/h3\u003e\n\u003cp\u003eAdjust the CZ-21 for changing ground conditions to reduce unwanted ground responses and maintain dependable performance.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"mds-cz21-feature-card\"\u003e\n\u003cdiv class=\"mds-cz21-feature-icon\"\u003e🌊\u003c\/div\u003e\n\u003ch3\u003eSaltwater Compensation\u003c\/h3\u003e\n\u003cp\u003eFisher’s signal analysis helps cancel the conductive response of saltwater for more stable operation on wet sand, in the surf and below the surface.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"mds-cz21-feature-card\"\u003e\n\u003cdiv class=\"mds-cz21-feature-icon\"\u003e↗\u003c\/div\u003e\n\u003ch3\u003eFaint-Target Audio Boost\u003c\/h3\u003e\n\u003cp\u003eVolume settings above level 5 increase the response from faint and deeper targets while keeping strong target signals at a controlled volume.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"mds-cz21-feature-card\"\u003e\n\u003cdiv class=\"mds-cz21-feature-icon\"\u003e!\u003c\/div\u003e\n\u003ch3\u003eLarge-Target Alert\u003c\/h3\u003e\n\u003cp\u003eA distinctive bell tone alerts the user when a large, shallow target overloads the identification circuit.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection class=\"mds-cz21-section\"\u003e\n\u003cdiv class=\"mds-cz21-split\"\u003e\n\u003cdiv class=\"mds-cz21-info-card\"\u003e\n\u003ch2\u003eThree Operating Modes\u003c\/h2\u003e\n\u003cul class=\"mds-cz21-check-list\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eTarget-ID Mode:\u003c\/strong\u003e Silent-search, slow-motion discrimination with three-tone audio identification.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAuto-Tune Mode:\u003c\/strong\u003e Threshold-based all-metal mode designed for maximum sensitivity and a wider search pattern.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePinpoint Mode:\u003c\/strong\u003e No-motion all-metal pinpointing with a variable pitch and volume response.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"mds-cz21-info-card\"\u003e\n\u003ch2\u003eBuilt for Different Hunting Environments\u003c\/h2\u003e\n\u003cul class=\"mds-cz21-check-list\"\u003e\n\u003cli\u003eSaltwater beaches and wet sand\u003c\/li\u003e\n\u003cli\u003eFreshwater lakes and swimming areas\u003c\/li\u003e\n\u003cli\u003eSurf and shallow-water hunting\u003c\/li\u003e\n\u003cli\u003eScuba diving and underwater recovery\u003c\/li\u003e\n\u003cli\u003eCoin and jewelry hunting on land\u003c\/li\u003e\n\u003cli\u003eRelic hunting in suitable ground conditions\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection class=\"mds-cz21-section\"\u003e\n\u003cdiv class=\"mds-cz21-image-section\"\u003e\n\u003cdiv class=\"mds-cz21-image-section-image\"\u003e\u003cimg src=\"https:\/\/firsttexasproducts.com\/cdn\/shop\/files\/CZ2197.jpg?v=1741981468\u0026amp;width=1200\" alt=\"Diver using a Fisher CZ-21 underwater metal detector\" width=\"1200\" height=\"1200\" loading=\"lazy\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"mds-cz21-image-section-content\"\u003e\n\u003ch2\u003eDesigned for Underwater Treasure Recovery\u003c\/h2\u003e\n\u003cp\u003eThe CZ-21 can be shortened for diving, extended for land use or configured with the control housing mounted on a belt for reduced arm fatigue during land and shallow-water hunting. Permanently attached waterproof headphones provide direct audio feedback in noisy surf and underwater environments.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection class=\"mds-cz21-section\"\u003e\n\u003cdiv class=\"mds-cz21-section-heading\"\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"mds-cz21-spec-grid\"\u003e\n\u003cdiv class=\"mds-cz21-spec\"\u003e\n\u003cspan class=\"mds-cz21-spec-label\"\u003eTechnology\u003c\/span\u003e \u003cspan class=\"mds-cz21-spec-value\"\u003eDual-Frequency VLF\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"mds-cz21-spec\"\u003e\n\u003cspan class=\"mds-cz21-spec-label\"\u003eOperating Frequencies\u003c\/span\u003e \u003cspan class=\"mds-cz21-spec-value\"\u003e5 kHz and 15 kHz\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"mds-cz21-spec\"\u003e\n\u003cspan class=\"mds-cz21-spec-label\"\u003eSearchcoil\u003c\/span\u003e \u003cspan class=\"mds-cz21-spec-value\"\u003e10-Inch-Class Concentric Coil\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"mds-cz21-spec\"\u003e\n\u003cspan class=\"mds-cz21-spec-label\"\u003eSearchcoil Connection\u003c\/span\u003e \u003cspan class=\"mds-cz21-spec-value\"\u003ePermanently Attached\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"mds-cz21-spec\"\u003e\n\u003cspan class=\"mds-cz21-spec-label\"\u003eWaterproof Rating\u003c\/span\u003e \u003cspan class=\"mds-cz21-spec-value\"\u003eSubmersible to 250 Feet\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"mds-cz21-spec\"\u003e\n\u003cspan class=\"mds-cz21-spec-label\"\u003eOperating Modes\u003c\/span\u003e \u003cspan class=\"mds-cz21-spec-value\"\u003eTarget-ID, Auto-Tune and Pinpoint\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"mds-cz21-spec\"\u003e\n\u003cspan class=\"mds-cz21-spec-label\"\u003eTarget Identification\u003c\/span\u003e \u003cspan class=\"mds-cz21-spec-value\"\u003e3-Tone Audio Plus Bell Tone\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"mds-cz21-spec\"\u003e\n\u003cspan class=\"mds-cz21-spec-label\"\u003eGround Balance\u003c\/span\u003e \u003cspan class=\"mds-cz21-spec-value\"\u003eManual\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"mds-cz21-spec\"\u003e\n\u003cspan class=\"mds-cz21-spec-label\"\u003eDiscrimination\u003c\/span\u003e \u003cspan class=\"mds-cz21-spec-value\"\u003e7 Preset Control Positions\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"mds-cz21-spec\"\u003e\n\u003cspan class=\"mds-cz21-spec-label\"\u003eSensitivity\u003c\/span\u003e \u003cspan class=\"mds-cz21-spec-value\"\u003e10-Level Adjustment\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"mds-cz21-spec\"\u003e\n\u003cspan class=\"mds-cz21-spec-label\"\u003eVolume\u003c\/span\u003e \u003cspan class=\"mds-cz21-spec-value\"\u003e10-Level Adjustment\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"mds-cz21-spec\"\u003e\n\u003cspan class=\"mds-cz21-spec-label\"\u003eHeadphones\u003c\/span\u003e \u003cspan class=\"mds-cz21-spec-value\"\u003ePermanently Attached Waterproof\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"mds-cz21-spec\"\u003e\n\u003cspan class=\"mds-cz21-spec-label\"\u003ePower\u003c\/span\u003e \u003cspan class=\"mds-cz21-spec-value\"\u003e4 × 9V Batteries\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"mds-cz21-spec\"\u003e\n\u003cspan class=\"mds-cz21-spec-label\"\u003eAlkaline Battery Life\u003c\/span\u003e \u003cspan class=\"mds-cz21-spec-value\"\u003eApproximately 35–55 Hours\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"mds-cz21-spec\"\u003e\n\u003cspan class=\"mds-cz21-spec-label\"\u003eExtended Length\u003c\/span\u003e \u003cspan class=\"mds-cz21-spec-value\"\u003eApproximately 50 Inches\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"mds-cz21-spec\"\u003e\n\u003cspan class=\"mds-cz21-spec-label\"\u003eCollapsed Length\u003c\/span\u003e \u003cspan class=\"mds-cz21-spec-value\"\u003eApproximately 30 Inches\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"mds-cz21-spec\"\u003e\n\u003cspan class=\"mds-cz21-spec-label\"\u003eComplete Weight\u003c\/span\u003e \u003cspan class=\"mds-cz21-spec-value\"\u003eApproximately 6 lb. 1 oz.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"mds-cz21-spec\"\u003e\n\u003cspan class=\"mds-cz21-spec-label\"\u003eControl Housing\u003c\/span\u003e \u003cspan class=\"mds-cz21-spec-value\"\u003eHip-Mountable on Land\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"mds-cz21-spec\"\u003e\n\u003cspan class=\"mds-cz21-spec-label\"\u003eCountry of Origin\u003c\/span\u003e \u003cspan class=\"mds-cz21-spec-value\"\u003eUSA\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection class=\"mds-cz21-section\"\u003e\n\u003ch2\u003eIncludes\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eFisher CZ21-10 metal detector with 10-inch searchcoil\u003c\/li\u003e\n\u003cli\u003ePermanently attached waterproof headphones\u003c\/li\u003e\n\u003cli\u003eDetector shaft and armrest\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e\n\u003csection class=\"mds-cz21-section\"\u003e\n\u003cdiv class=\"mds-cz21-section-heading\"\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"mds-cz21-faq\"\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan the Fisher CZ-21 be used in saltwater?\u003c\/summary\u003e\n\u003cdiv class=\"mds-cz21-faq-answer\"\u003e\n\u003cp\u003eYes. The CZ-21 is designed for freshwater and saltwater operation. Its dual-frequency system and saltwater compensation help reduce false responses caused by conductive wet sand and saltwater.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow deep can the CZ-21 be submerged?\u003c\/summary\u003e\n\u003cdiv class=\"mds-cz21-faq-answer\"\u003e\n\u003cp\u003eThe detector is rated for underwater use at depths of up to 250 feet when properly maintained and used according to the manufacturer’s instructions.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the benefit of the 10-inch coil?\u003c\/summary\u003e\n\u003cdiv class=\"mds-cz21-faq-answer\"\u003e\n\u003cp\u003eThe larger coil covers more ground with each sweep and is well suited for open beaches, swimming areas and underwater locations. It may also provide increased detection depth on suitable targets under favorable conditions.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eDoes the CZ-21 have a visual Target ID screen?\u003c\/summary\u003e\n\u003cdiv class=\"mds-cz21-faq-answer\"\u003e\n\u003cp\u003eNo. The CZ-21 uses audio target identification. Low, medium and high tones identify different conductivity ranges, while a bell tone warns of a large, shallow target.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan the searchcoil or headphones be removed?\u003c\/summary\u003e\n\u003cdiv class=\"mds-cz21-faq-answer\"\u003e\n\u003cp\u003eNo. The waterproof searchcoil cable and headphones are permanently attached and are not designed to be changed by the user.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan the control housing be hip-mounted?\u003c\/summary\u003e\n\u003cdiv class=\"mds-cz21-faq-answer\"\u003e\n\u003cp\u003eYes. The housing can be hip-mounted for land and shallow-water searching to reduce weight on the detector shaft. Fisher does not recommend hip-mounting the control housing while scuba diving.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat batteries does the CZ-21 use?\u003c\/summary\u003e\n\u003cdiv class=\"mds-cz21-faq-answer\"\u003e\n\u003cp\u003eThe CZ-21 operates on four 9V batteries. Alkaline batteries are recommended and provide approximately 35 to 55 hours of operation, depending on conditions and settings.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection class=\"mds-cz21-cta\"\u003e\n\u003ch2\u003eBuilt for Serious Beach and Underwater Detecting\u003c\/h2\u003e\n\u003cp\u003eThe Fisher CZ-21 combines proven dual-frequency performance, audio target identification and professional underwater construction in a detector designed for demanding saltwater, freshwater and land hunting. This model includes the larger 10-inch-class searchcoil for increased coverage in open hunting areas.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e","brand":"Fisher Labs","offers":[{"title":"Default Title","offer_id":67625352298815,"sku":"CZ21-10-OPENBOX","price":1199.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0282\/4395\/1650\/files\/fisher-cz21-10-10-coil-6191280.webp?v=1784604247","url":"https:\/\/www.metaldetectingshop.com\/products\/open-box-fisher-cz21-10-10-coil","provider":"Metal Detecting Shop","version":"1.0","type":"link"}