Gbnryg olive green professional metal detector with backpack and headphones

Rank #5 in Best Metal Detectors 2026: 10 Ranked, and the Coil Spec That Says 12cm

Gbnryg Professional Metal Detector for Adults, 5 Modes

£109.99 4.4 from 1,535 Amazon ratings
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Price and rating as shown on Amazon when we collected them. Both change.

The Gbnryg M55Z is the fifth entry in our guide to the best metal detectors. It is a £109.99 detector sold under the title "Professional Metal Detector for Adults", with five detection modes, an IP68 search coil, a backlit LCD and a kit that the bullets say includes a large capacity backpack, over-ear headphones with adjustable volume and a manganese steel digger. The listing shows 4.4 out of 5 from 1,535 ratings and a best sellers rank of 6 in Metal Detectors.

The reason it sits at number five is the batteries. Three fields on the same page disagree with each other: "Are Batteries Required" is answered "No", "Power Source" is listed as "Battery Powered" with a battery type of 9V, and the third bullet says two batteries are included free in the box. A detector cannot both not need batteries and ship with two of them. Where a number usually slips, this one holds: the search coil size is given as 30.48 Centimetres, which is 12 inches, matching the 12-inch coil named in the item highlight. Everything on this page comes from the Amazon listing as it stands; we have not tested the Gbnryg M55Z ourselves.

How those 1,535 ratings break down

An average hides its own shape. This is the spread behind the 4.4 stars.

5 star
69%
4 star
16%
3 star
7%
2 star
3%
1 star
5%

Specification

Exactly as published on the Amazon listing, field for field.

Price £109.99
Rating 4.4 out of 5 from 1,535 ratings
Are Batteries Required (as listed) No
Power Source Battery Powered (battery type listed as 9V)
Batteries Supplied (from the bullets) 2 × free batteries included
Search Coil Size 30.48 Centimetres (the item highlight says 12")
Model Number M55Z
Best Sellers Rank 6 in Metal Detectors (2,997 in Garden)

What buyers actually say

Quoted from customer reviews on Amazon

Verified purchase

“Very well made only need 2 x 9v batteries ,great ruck sack every thing fits in easy and a well made military style shovel, we are very happy ,just need some good weather to try it out ,thanks”

Peter Moss
Verified purchase

“For the price, this detector lives up to its expectations. Paired with a hand metal detector, my son has been very successful at detecting metallic objects. Within three outings he found coins, jewellery and lots of junk of course.The hand pick and shovel is weak and the spade has broken already. They are ok for starter tools.We are all very happy with this detector.”

J Shaw

What it is up against

The rivals it was ranked against in Best Metal Detectors 2026: 10 Ranked, and the Coil Spec That Says 12cm.

Questions people ask

Does the Gbnryg M55Z need batteries?

The specification field answers "Are Batteries Required: No", but the same listing gives the power source as Battery Powered with a battery type of 9V, and the bullets say two free batteries come in the box.

What size is the search coil on the Gbnryg M55Z?

The specification gives 30.48 Centimetres and the item highlight on the same page describes a 12" IP68 waterproof search coil. 30.48 cm is 12 inches, so those two agree.

Is the Gbnryg M55Z waterproof?

The listing gives the search coil an IP68 rating and says it suits beach walks and shallow water searches. Its own bullet adds that the controller is not waterproof.

How many detection modes does the Gbnryg M55Z have?

Five. The first bullet lists 5 detection modes and names All Metal and Disc among them.

What comes in the Gbnryg M55Z kit?

The bullets list two free batteries, a large capacity backpack, over-ear headphones with adjustable volume and a manganese steel digger alongside the detector.

How is the Gbnryg M55Z rated by buyers?

4.4 out of 5 from 1,535 ratings on the listing. The rating breakdown shown on the page counts 69 five-star and 5 one-star.

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