AT MAX™ International

Maximum Detection. Powerful, Wireless, All Terrain Performance.
Designed for dusty, humid
or wet environments.
Fully waterproof to
3 meters
Go where others fear to follow.
Click to Explore the AT MAX™ International
Find out more about key features and the technology behind the AT MAX™ International by clicking on the buttons below.

Go wireless with Z-Lynk Speed!

Sync to Garrett’s MS-3 wireless headphones that are included with the AT MAX™ International.

Enjoy the treasure tones only you can hear.
Super fast Z-Lynk™ wireless technology.
Near-zero delay (17-milliseconds) from your detector to your headphones.

Which means you will be able to quickly and accurately pinpoint with Garrett MS-3 Z-Lynk wireless headphones.

Maximum Detection Depth

Enhanced electronics, a 13.6 kHz operating frequency, and eight Sensitivity/Depth adjustments allow you to detect targets deeper than other Garrett AT detectors.
Automated Ground Balance Window™
This Garrett exclusive feature can simultaneously "spread" the ground balance setting to a range of values to reduce ground response in severely mineralized areas. Automatic and manually adjustable ground balance options also available.
Hunt Day and Night
The AT MAX™ International includes a backlit display feature, allowing you to continue hunting in low-light conditions.

Click the “Iron Audio/Light” button on the unit to see it in action!
AT MAX™ International Iron Audio
Hear the iron trash before you dig it!

Iron Audio allows you to hear discriminated iron (normally silenced) to avoid digging undesired flat iron targets such as bottle caps or washers.

NOTE: To use the Iron Audio feature, some degree of Iron Discrimination must be set. In this demonstration, the Iron Discrim setting is at 35. Without Iron Audio, both the bottle cap and silver coin sound like good targets. With the Iron Audio, the bottle cap response includes iron “grunts” to indicate this might be a trash target.
AT MAX™ International Additional Features
True All Metal Mode
Detects all types of metal and provides the greatest possible detection depth and sensitivity.
All Metal Iron Audio™
Garrett exclusive feature that audibly identifies discriminated iron while operating in a True All-Metal Mode (also available in the three Discrim Modes).
Digital Target ID
Numeric identification scale from 0 to 99. Identifies a target metal’s conductivity.
Adjustable Threshold
User can manually adjust the audio threshold (the constant background “hum”) to better hear targets.
Three year warranty on limited parts and labor
Garrett detectors, pinpointers, and searchcoils now come with a 3 Year Warranty.


Standard and optional searchcoils for Garrett’s AT detector series, and protective searchcoil covers.
Digging tools, treasure pouches, Keepers finds box, and sand scoops.
Garrett Z-Lynk wireless kits, headphones, and accessories.
Gear up for the field with Garrett daypacks and protective detector bags.
Standard use, fully submersible, and wireless headphone options.
Garrett branded shirts, caps, and informative treasure hunting books.


AT Max International AT Pro International
Z-Lynk™ Wireless Technology Yes (With MS-3 Z-Lynk headphones included) No
Backlight No
Iron Discrimination Segments 44 40
True All-Metal Mode No
Volume Adjustment No
Notch Discrimination Adjustable Adjustable
Search Modes 4, all Pro Audio 6 (3 Standard, 3 Pro)
Proportional Audio
Standard Binary Audio No
Fast Recovery Speed
Sensitivity/ Depth Adjustments 8 8
Iron Audio™ (Disc. Modes)
Iron Audio™ (All Metal Mode) No
Threshold Adjustment No
Digital Target ID
Ground Balance, Auto/Manual
Ground Balance Window™ ✔ (Automatic) No
Waterproof ✔ (to 10 feet / 3m) ✔ (to 10 feet / 3m)
Freshwater use
Saltwater use
Frequency 13.6 kHz, adjustable 15 kHz, adjustable
Audio Tone ID Levels 3 3
Target Depth Indicator
Standard Searchcoil 8.5” x 11” DD PROformance™ 8.5” x 11” DD PROformance™
Length (Adjustable) 43" to 56" (1.09m - 1.4m) 43" to 56" (1.09m - 1.4m)
Power 4 AA (included) 4 AA (included)
Battery Condition Indicator
Warranty 3 Years 3 Years
Total Weight 3.44lb (1.56kgs) without coil cover, 3.58lb (1.62kgs) with coil cover 3.03 lbs (1.4 kgs)