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Fisher CZ 21
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Fisher CZ 20


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Fisher CZ 21
Fisher CZ 20
Feature comparison between Fisher CZ 21 and Fisher CZ 20
Options Fisher CZ 21 Fisher CZ 20
Detector Type VLF Beach Detector VLF Beach Detector
Price $1000 $1000
Manufactured in 2009 1995
Battery Type Four 9V Four 9V
Weight (Lbs.) 6 5.7
Operating frequency 5, 15 kHz. 5, 15 kHz.
Display None None
Backlight No No
Target ID Audio+2 LED Lights
Tone ID 3 Tones 3 Tones
Search Modes
  • Autotune All Metal
  • Disc. Silent Search
  • Pinpoint All Metal N/M
  • All Metal
  • Disc. Silent Search
  • Pinpoint
Ability to change coils No No
Ground balance Manual Auto, Manual
Waterproof 250 feet 250 feet
Warranty 2 Years Lifetime
Number of Reviews graph 5
graph 4
graph 1
graph 18
graph 7
graph 1
graph 1
graph 1
Avg. User Rating 4.40 4.43
Avg. Durability Rating 4.75 5.00
Avg. Ease of Use Rating 4.75 5.00
Avg. Depth Rating
Depth value
Depth value

Most helpful review for Fisher CZ 21

CZ-21, an excellent land and water machine
The CZ-21 is an excellent and easy to use metal detector. Once you learn to use it, you will do very well. It is easy to ground balance and it can be rod, chest, or hip mounted with no problems. It is waterproof down to 250 feet and comes with a straight rod mount that can also be used for diving. The detector, when used in the AutoTune (a wide scan all metal mode) setting is very sensitive, and its 3 tone ID makes detecting a pleasure.
If you want gold, dig the mid tones.
If you are hunting for coins, dig the high tones. If you hear a low tone - it is probably iron.

A low/medium means a possible gold target next to iron. The detector will have trouble finding tiny gold necklaces or tiny chain link bracelets unless they have a clasp, but then the other brands of water detectors also have difficulty in finding such targets.

Be sure to swing the detector coil slow in the water and you will have great success. The pinpoint button takes some getting used to, but after a while in the water you will not even bother using it. Overall, the CZ-21 is an excellent and well built detector that can be used on land or in the water. And, it is proficient in both ocean and fresh water as well as on dry or wet sand.
Darryl from Sacramento, CA

Thumbs up! 75
Read all reviews for Fisher CZ 21

Most helpful review for Fisher CZ 20

Lemon cz21
I purchased a brand new cz21 in April. It arrived broke. Sent it back and instead of sending me a new they said they only fix it. Got it back after more than a month used it very little and it went completely dead. Now its back and fisher is giving a big run around. I paid $1200.00 for this nightmare and warn anyone out there not to buy a fisher. They are of poor quality and over priced not to mention of the poor customer service.
Nicky harvell from Fort walton bch., florida usa

Thumbs up! 81
Read all reviews for Fisher CZ 20