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Fisher CZ 21
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Minelab Excalibur 1000


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Fisher CZ 21
Minelab Excalibur 1000
Feature comparison between Fisher CZ 21 and Minelab Excalibur 1000
Options Fisher CZ 21 Minelab Excalibur 1000
Detector Type VLF Beach Detector VLF Beach Detector
Price $1000 $1000
Manufactured in 2009 1998
Battery Type Four 9V Sealed
Weight (Lbs.) 6 4
Operating frequency 5, 15 kHz. 1.5 - 25.5 kHz.
Display None None
Backlight No No
Target ID Audio
Tone ID 3 Tones Multi Tone
Search Modes
  • Autotune All Metal
  • Disc. Silent Search
  • Pinpoint All Metal N/M
  • Discriminate
  • Pinpoint
Ability to change coils No No
Ground balance Manual Auto
Waterproof 250 feet 200 feet
Warranty 2 Years 1 Year
Number of Reviews graph 5
graph 4
graph 1
graph 36
graph 8
graph 5
graph 5
graph 8
Avg. User Rating 4.40 3.95
Avg. Durability Rating 4.75 1.00
Avg. Ease of Use Rating 4.75 1.33
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! 74
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Most helpful review for Minelab Excalibur 1000

A flawed masterpiece
I've been diving using U/W metal detectors for 35 years, and as concerns sensitivity and general detection ability, I like the Excalibur best. But having said that it is far from being a perfect machine, and strangely, Minelab doesn't seem interested in taking the steps necessary to improve its design - the 2008 model carries on the same problems as the previous generation. (I know numerous users have written to them on the following problems, as I have - this was confirmed to me during phone calls to MInelab some 4 years ago!). The major problems relate to the ergonomics of its design.

Basically the Excalibur it is a land use device that is waterproof. The balance and design is fine on land but but not a good U/W design. Even when using the short shaft underwater the weight becomes tiring on your arm. (just try lying on your stomach on the floor, hold the Excalibur in front of you with an outstretched arm and try sweeping the unit back and forth, then imagine trying to do that for an hour or more - this is basically what a diver has to do).
The problem is that the bulk of weight is too far forward of your hand. A better design would have been to have the battery pack and instrument pod positioned further back over your forearm.(I've actually done this modification to my unit and it is a BIG improvement).

The other point that Minelab don't understand is that the mounting of the battery pack and instrument pack either side of the tubing arm in a vertical plan actually creates a noticable drag when sweeping horizontally underwater. Again a layout of these two packs in a horizontal plane corrects this and makes the unit easier to handle underwater.

Finally as regards design flaws is the type of knob/shaft combination used on the controls. After some time the controls seem to become a little stiff and the knobs spin on the metal shaft. Especially underwater, when it is harder to feel the knobs slipping on the shaft, this can mean your detector is not actually set on the indicted setting.

As far as the electronics go I have nothing but praise except for one area. The battery charging system is something from the 1960's. NO battery charge indicator to let you know you are actually charging the unit whenever it's plugged in, and NO battery charge status indication. And the battery charger connection plugs for any underwater device released in 2008 is simply sub standard - basically they've just gone with the cheapest solution. (As an example of what they could have done my sealed unit electric toothbrush charges without any metal to metal contact - to charge just place the indentation in the base of the unit over a plastic knob on the charger - no chance of corrosion or bad connection and a seemingly ideal solution for any device that has to work underwater).

So in summary, a great unit as regards its detection ability, sensitivity and screening befitting a $1,000+ unit as long as you want to use it on the beach or wading in the water. But if you're working a wreck site it's a tiring unit for a diver to use underwater for extended periods. And the battery charge system is junk.
O. Barnes from Madagascar

Thumbs up! 204
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