Garrett Pulse Induction detector for underwater, beach detecting — verified specs.
The Garrett Sea Hunter Mark II is a mid-range-tier Pulse Induction metal detector from Garrett, aimed at underwater, beach detecting. Standout: Discrete Trash Elimination mode removes pull tabs and foil without degrading ring/coin sensitivity.
The Garrett Sea Hunter Mark II is a mid-range-tier Pulse Induction metal detector from Garrett, aimed at underwater, beach detecting. It runs at 750 pulses per second, adjustable. Weighing 5.1 lbs (2.3 kgs), stem-mounted, it sits on the lighter end of its class. Below: every spec verified against the manufacturer's own pages, with sources.
| Brand | Garrett |
| Technology | Pulse Induction |
| Frequencies | 750 pulses per second, adjustable |
| Weight | 5.1 lbs (2.3 kgs), stem-mounted |
| Waterproof | Submersible to 200 feet (65 m); underwater headphones required |
| Coil | 8" PROformance mono submersible searchcoil |
| Best for | Underwater, beach |
| Price tier | Mid-range |
Verified against manufacturer pages, October 2026. Fields marked "not published" are absent from official sources — we never fill them from retailers.
The Garrett Sea Hunter Mark II sits in Garrett's lineup alongside Garrett ACE 400, Garrett ACE Apex, Garrett AT Max, Garrett AT Pro. It uses Pulse induction (PI) — firing powerful magnetic pulses and measuring how fast the field decays. PI ignores salt and heavy mineralization and goes very deep — but discriminates poorly, so you dig more trash. The choice for goldfields and extreme beach depth. Compare it against its intended competition in our guides to the best beach metal detectors, best underwater metal detectors, and see how Garrett's range stacks up on the Garrett brand page.
The Garrett Sea Hunter Mark II is best for underwater, beach detecting. Key strengths: discrete trash elimination mode removes pull tabs and foil without degrading ring/coin sensitivity.
750 pulses per second, adjustable
Submersible to 200 feet (65 m); underwater headphones required
5.1 lbs (2.3 kgs), stem-mounted
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The Garrett Sea Hunter Mark II is a strong pick for underwater, beach detecting, but no machine is universal. Check the waterproof line before any water use, confirm the weight against your stamina, and remember that ground conditions affect real-world performance more than any spec number.