Saltwater beaches are where single-frequency VLF machines go to chatter. You want multi-frequency and honest waterproofing.
The XP Deus II is the beach-and-dive king (20 m, fully wireless, FMF). For surf wading on a saner budget, the Minelab Equinox 800 and Nokta Legend bring multi-frequency with 5 m waterproofing.
Wet salt sand is mineralized: it looks like a giant target to a single-frequency VLF detector, causing false signals and lost depth. Simultaneous multi-frequency (Multi-IQ, FMF, SMF, Multi-Salt modes) samples multiple frequencies at once and subtracts the salt response. That's why every serious beach pick below is multi-frequency — and why "waterproof coil" alone isn't enough once waves are involved.
20 m IP68, fully wireless, FMF — the only pick here that's a true dive machine.
Multi-IQ with Beach mode; proven saltwater performer.
SMF multi-frequency, 5 m waterproof, FerroCheck iron meter for trashy beaches.
MD-MF multi-frequency with Multi-Salt; 16 ft waterproof.
15 kHz VLF but fully submersible to 10 ft — fine for freshwater and shallow surf.
| Model | Technology | Frequencies | Weight | Waterproof | Coil | Best for | Tier |
|---|---|---|---|---|---|---|---|
| XP Deus II | Multi-Freq | 45 kHz + MF | From 750 g | IP68 · 20 m | 9" DD | Underwater | Flagship |
| Minelab Equinox 800 | Multi-Freq | Multi-IQ | 1.34 kg | Not published | Not published | Coins | Premium |
| Nokta Legend | Multi-Freq | 4 kHz–40 kHz + MF | 1.3 kg | 5 m | 12" × 9" DD | Coins | Premium |
| Garrett Vortex VX9 | Multi-Freq | 25 kHz + MF | 3 lbs | 5 m | 8.5" × 11" DD | Beach | Mid-range |
| Garrett AT Pro | VLF | 15 kHz | 3.03 lbs | 10 ft | 8.5" × 11" DD | Coins | Mid-range |
Specs verified against manufacturer pages in October 2026. "Not published by the manufacturer" means the spec is absent from official pages — we do not fill it from retailers.
Understand the tech behind these picks: VLF vs pulse induction vs multi-frequency, the metal detector frequency guide (kHz explained), how discrimination and sensitivity work, the history of the metal detector, and detecting laws and permits. Compare head-to-head: Equinox 800 vs ACE Apex · Legend vs Equinox 700 · Deus II vs Manticore.
On dry sand, yes — most machines cope. On wet salt sand and in the surf, single-frequency VLF machines false-signal badly. That's the line where multi-frequency becomes close to mandatory.
Waterproof means rated submersion (IP68 with a depth, e.g., 5 m). 'Waterproof coil' means only the coil can get wet — the control box must stay dry. 'Weatherproof'/'rainproof' means rain, not submersion. Check our spec tables per model.
PI ignores salt mineralization beautifully and goes deep, but it has poor discrimination — you'll dig more trash, and PI machines are heavier and pricier. Multi-frequency is the better all-round beach choice for most hunters.
Yes — for beach hunting it's as important as the detector. A sturdy stainless scoop with drainage holes saves enormous time in sand.
Black sand is magnetite-rich sand — heavily mineralized ground that reads as one giant false target. It challenges even multi-frequency machines; PI detectors handle it best. If your beach has black sand streaks, expect reduced depth and more noise.
After storms and at low tide: waves strip sand and concentrate heavy targets (rings, coins) in cuts and scallops. The towel line produces modern jewelry drops; the low-tide line produces older, heavier finds.
Surf detecting needs true submersion ratings (IP68 with a depth number) on the whole machine, not just the coil — plus a machine that handles moving saltwater. The Deus II and Equinox 800 are built for it; 'weatherproof' machines are not.
No beach detector defeats physics: black sand (magnetite) beaches challenge even multi-frequency, and surf hunting demands true submersion ratings. Never trust a 'waterproof coil' claim past the waterline.