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Fisher CZ-21 with 8" Search Coil Metal Detector
with 8" Search Coil Plus FREE Metal Detecting & Treasure Hunting Accessories
You can go anywhere with the CZ-21 even 250 feet underwater. The CZ-21 is a go-anywhere, do anything, all-weather, target-ID machine that is leak proof to 250 feet. And its patented electronics make it deep-seeking while it ignores the destabilizing effects of salt water. It is the perfect target ID machine for the versatile treasure hunter who wants to hunt anywhere-underwater, on the beach, in the surf, on dry land and in all kinds of weather.
Kellyco has sold and distributed Fisher products since 1975 and was certified as Fisher detector experts since 1984! Buy with confidence at Kellyco where you always get more for your money.
Features:
- Warranty : 2 Year Limited
- Frequencies : 5 kHz, 15 kHz
- Total Weight : 5.7 lbs (2.6 kgs)
- Submersible : In up to 250 Feet of Water
- Pinpoint : Push-Button, VCO No-Motion Pinpointing
- Technology : Patented Dual-Frequency Fourier Domain Signal Analysis
- Multi-Frequency Infinite Spectrum Technology : Sends Out a Huge Spectrum of Signals that Induce Magnetic Fields into Metal Objects at Different Frequencies
- 8" Search Coil
Additional Information
Manufacturer | Fisher |
---|---|
Manuals | productmanuals/12-cz218.pdf |
SKU | 12-CZ218 |
Product Dimensions | 36.00x13.00x8.00 |
Manufacturer SKU | CZ21-8 |
Use carrier default config | No |
Allow phone orders only | No |
Factory Included Accessories |
|
Warranty | Yes |
Detector Type | Beach & Water |
Search Coil Type | Concentric |
Search Coil Size (in) | 8" |
Search Coil Shape | Round |
Search Coil Build | Open |
Waterproof Search Coil | Yes |
Interchangeable Search Coil | No |
Technology | VLF Multiple Frequency |
Arm Rest | Fixed |
Arm Rest Strap | No |
Adjustable Shaft | Yes |
Assembled Length Max (in) | 49 |
Assembled Length Min (in) | 33 |
Apps | None |
GPS | No |
Audio Tones | Yes |
Depth Indication | No |
Control Box Mount | Convertible |
Frequencies | 5 kHz,15 kHz |
Number of Frequencies | 2 |
Programmable Target Id | No |
Target Id | Yes |
Threshold | Fixed |
Discrimination | Adjustable |
Pinpoint Mode | Yes |
Ground Balance | Fixed |
Vibration Mode | No |
Search Modes | 3 |
Search Mode Types | All Metal, Motion, Pinpoint |
Search Flashlight | No |
Display Type | N/A |
Backlit Display | No |
Volume Control | Yes |
Headphone Jack | Hard Wire |
Bluetooth Compatible | No |
Interchangeable Headphones | No |
Battery Type | 9-Volt |
Battery Quantity | 4 |
Battery Life (hr) | 35 to 45 Hours |
Rechargeable System | No |
Fisher CZ-21 Metal Detector
If it's in the Ground or in the Water a Fisher Metal Detector Will Find it!

You can go anywhere with the CZ-21 even 250 feet underwater. The CZ-21 is a go-anywhere, do anything, all-weather, target-ID machine that is leak proof to 250 feet. And its patented electronics make it deep-seeking while it ignores the destabilizing effects of salt water. It is the perfect target ID machine for the versatile treasure hunter who wants to hunt anywhere-underwater, on the beach, in the surf, on dry land and in all kinds of weather.
Target ID: put on the headphones, swing the search coil, and listen to the 3-tone Target ID A low tone means you are over iron, a mid tone means pull tab or gold ring and a high tone means a coin. And a distinctive bell tone lets you know when you are over big, shallow targets, no more digging beer cans! For precise pinpointing, use the Pinpoint button, which puts the detector in a no-motion-required, all metal mode. See for yourself: If you are an all-around treasure hunter who will not settle for second best, the CZ-21 is the detector for you.
Summary of Field Test (Reprinted from Lost Treasure Magazine): Incorporating all of the features of the field-proven CZ-5 and CZ-6 with the exception of the meter, the CZ-21 should prove to be an extremely popular detector with not only water and beach hunters, but coin and relic hunters who want a top-notch detector that is totally impervious to the elements. This is truly a detector that will perform equally as well in salt-water surf as it will in a fresh water lake, a school yard, or mineralized battlefield or campsite.
The CZ-21 comes with Fisher's two year warranty, which considering it's an underwater detector, shows how confident the factory is that it will hold up under virtually any condition one might use it in. *Due to the special sealing and waterproofing of the Fisher CZ-21 underwater detectors the factory requires any unit needing warranty service or replacement to be sent directly to the factory and not the dealer where purchased from. Please refer to your supplied warranty information from the factory.
Technical Specifications:
- 2 Year Warranty
- 8" Open Search Coil
- Weight : 5.7 lbs (2.6 kgs)
- Frequencies : 5 kHz, 15 kHz
- Silent-Search
- Batteries : (4) 9V
- Battery Life : 45 Hours
- Three-Tone Audio Target ID
- VLF Slow Motion Discrimination
- Comes with Submersible Headphones
- Search Modes : 2 Plus Electronic Pinpoint
- All Metal, Motion, Pinpoint
- Push-Button, VCO No-Motion Pinpointing
- Super-Hot, Wide-Scan, All Metal Auto Tune Mode
- Patented Dual-Frequency Fourier Domain Signal Analysis
Features:
- Big-Target Alert
- Wet-Sand Operation
- Faint Target Audio Boost
- Submersible to 250 Feet
- Push-Button Ground Balance
- Increased Depth in Mineralized Soil
- Operates in Salt Water or Fresh Water
- Easy to Use : Turn-On-and-Go, Pre-Set Control
- Removable Control Housing Mounts on Belt with Belt Clip (included)
- Multi-Frequency Infinite Spectrum Technology : Fisher CZ Series Detectors Send Out a Huge Spectrum of Signals that Induce Magnetic Fields into Metal Objects at Different Frequencies
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Wow -
Review by Tony S on April 07, 2014
I had a lot of reservations about this machine after un-boxing and playing around in the backyard but after going out into the river today it by far passed my expectations. It took a little while to get used to not having a number display but after my first old coin I was sold. Ended up having a great first day. The depth was amazing and I can only imagine how much I'm going to love it after I get used to it.
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Fisher CZ-21 -
Review by William E on May 14, 2013
I started using a Fisher 1280x Aquanaut about 20 years ago but was not happy with it and did not find much gold. Probably because I would discriminate too much, so I sold it and got a Fisher Impulse and found over 100 gold rings over the next 10 years. I just about quit for years but started again last year and found about $900 worth of gold (necklace and ring) and decided to move up to a more modern detector. Fisher had served me well so I went with their best. Last summer I found 10 gold rings and two other gold items with it. Easy to use auto balance however some metal parts are not stainless and need to be replaced a few months after exposed to salt water.
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Review by John J. -
Review by John J on November 10, 2009
I have a metal detecting company and the Fisher CZ-21 is a top of the line metal detector in my inventory. It is a very fast and a very accurate machine. The CZ-21 is a wizard detector!
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Review by Glen T. -
Review by Glen T on March 04, 2009
My old Compass was closing in on its twentieth year and it was time for a new machine. I contacted a respected company Joan Allens in the UK as this was where I had purchased my first couple of machines and they have been around the longest. They recommended two makes of machine and one of them was Fisher. Why the CZ-21? Firstly it was waterproof, it could do land and sea, great ground balancing, uncomplicated, used normal batteries and had a pedigree. Why purchase from Kellyco? Simple. They offered the most attractive deal and service was exceptional. My new CZ-21 arrived and was up and running in a flash as I had already gone through the manual supplied by Kellyco.
I give a metal detector 6 months to pay itself back doing at least 3 hours a week. This machine did it in just 4 months giving me triple the return on the purchase price. A word of caution, this machine goes deep and you will pull coins and rings from surprising depths with the sensitivity pushed up. I look for a mixed bag and in our part of the world one is spoiled for choice. Would I recommend the CZ-21? Well she is not small and light, and one needs to swing from the shoulder, but she definitely makes up for this in performance. The ground balancing is key. This machine, although manual, sets itself apart from the rest on its ground balancing. I would give this machine a 5 star rating without hesitation.