Quick Answer: The best waterproof metal detector in 2026 is the Minelab Equinox 900 (~$1,049) — the entire machine is IP68-rated and submersible to 5 m (16 ft), and Multi-IQ multi-frequency handles fresh water, salt surf, and dry land equally well. The best budget submersible is the Nokta Simplex Ultra (~$299), which matches that 5 m rating for a third of the price; the Garrett AT Max (~$759) is the pick for rivers and creeks; and for actual scuba work the Minelab Excalibur II (~$1,499) and Garrett Sea Hunter Mark II (~$679) are rated to roughly 200 ft. Beware the fine print: most “waterproof” budget detectors only seal the coil — the control box drowns.
Water is where detectors go to die — and where the best targets hide. Rings come off cold fingers in lakes, coins wash into creek bends, and centuries of drops wait below the low-tide line. This guide ranks the machines whose entire body is rated for submersion, organized by how deep they can actually go: from 3–5 m wading machines to 60 m dive units. (Hunting salt beaches specifically? Our beach detector guide covers the wet-salt-sand problem; this guide is about which machines survive going under, on any water.)
Our top picks at a glance
| Detector | Best for | Rated depth | Tech | Price | Rating |
|---|---|---|---|---|---|
| Minelab Equinox 900 | Best waterproof detector overall | 5 m (16 ft) | Multi-IQ multi-frequency | $1,049 | ★★★★★ |
| Nokta Simplex Ultra | Best budget submersible | 5 m (16 ft) | Single frequency | $299 | ★★★★½ |
| Garrett AT Max | Best for rivers & creeks | 3 m (10 ft) | 13.6 kHz VLF | $759 | ★★★★☆ |
| Nokta Legend | Best value multi-frequency | 3 m (10 ft) | Multi-frequency | $589 | ★★★★½ |
| Minelab Excalibur II | Best dive detector | 66 m (200 ft) | BBS multi-frequency | $1,499 | ★★★★½ |
| Garrett Sea Hunter Mark II | Best budget dive machine | 60 m (200 ft) | Pulse induction | $679 | ★★★★☆ |
| Nokta PulseDive 2-in-1 | Best pocket underwater detector | 60 m (200 ft) | Pulse induction | $169 | ★★★★☆ |
1. Minelab Equinox 900 — Best Waterproof Detector Overall
Minelab Equinox 900
- Entire machine IP68-rated and submersible to 5 m (16 ft) — not just the coil.
- Multi-IQ simultaneous multi-frequency works in fresh water, salt surf, and on land.
- Dedicated Beach modes plus fast recovery speed for picking targets out of underwater trash.
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The Equinox 900 tops this list for the same reason it tops our overall rankings: it refuses to be a specialist. Minelab rates the whole unit IP68 to 5 m, which covers wading, snorkeling shallow swim lines, and the inevitable dunking — and unlike a dedicated dive machine, it loses nothing on dry land. In the water, Multi-IQ keeps discrimination working where single-frequency machines go blind, so you can pass on the bottle caps that carpet every public swimming hole. Add the wired waterproof headphones if you plan to put your ears under; the wireless ML 85s stay on shore.
2. Nokta Simplex Ultra — Best Budget Submersible
Nokta Simplex Ultra
- IP68-rated to 5 m (16 ft) — the same depth rating as machines three times its price.
- Vibration target alerts work where audio is hard to hear under water.
- Built-in rechargeable battery, backlit display, and just 1.2 kg (2.6 lb) on the arm.
No machine has done more to democratize water hunting than the Simplex line. For $299 you get a full 5 m submersion rating, a bright backlight for murky water, and handle vibration that tells you about targets when your ears can’t — a feature list that simply didn’t exist under $500 a few years ago. It’s a single-frequency machine, so wet salt sand will make it chatter (that’s physics, not a flaw — see the beach guide), but in fresh water lakes, rivers, and pools of every kind it hits far above its price. This is the waterproof detector for everyone who isn’t sure yet how wet they want to get.
3. Garrett AT Max — Best for Rivers & Creeks
Garrett AT Max
- All-Terrain design submersible to 3 m (10 ft) — built for creek crossings and river shallows.
- 13.6 kHz frequency with true all-metal mode and strong depth on coins and relics.
- Z-Lynk wireless audio on land; pair wired waterproof headphones for submerged hunting.
Fresh water is the AT Max’s home turf. Old swimming holes, mill crossings, and creek bends below colonial-era sites are exactly where its combination of 10 ft submersion, high sensitivity, and precise ground balance pays off — and unlike multi-frequency surf machines, you’re not paying for salt cancellation you’ll never use inland. One caveat straight from Garrett’s own spec sheet: the included MS-3 wireless headphones are not submersible. Rain, fine; river, no. Budget for Garrett’s wired underwater phones if your hunts go deeper than your waders.
4. Nokta Legend — Best Value Multi-Frequency Submersible
Nokta Legend
- Simultaneous multi-frequency at a price no rival matches — with a 3 m submersion rating.
- Handles fresh and salt water alike, so one machine covers lake and coast trips.
- Replaceable rechargeable battery and full lighting package for low-visibility water.
The Legend answers a specific question: what if you want the Equinox 900’s go-anywhere multi-frequency in the water, but $1,049 isn’t happening? At $589 the Legend submerges to 3 m, cancels salt like the big Minelab, and gives up only a little depth and refinement. For a hunter who splits time between an inland lake and one salt-beach vacation a year, it’s arguably the smartest single purchase on this page.
5. Minelab Excalibur II — Best Dive Detector
Minelab Excalibur II
- Rated to 66 m (200 ft) — genuine scuba territory, engineered for years of salt immersion.
- BBS technology runs 17 frequencies simultaneously for deep, quiet performance in salt.
- Hardwired waterproof headphones and a design proven on shipwreck and surf sites for decades.
If detecting under the surface — not just in the splash zone — is the plan, the Excalibur II is the machine the pros strap on. Minelab rates it to 66 m, its 17-frequency BBS engine keeps discrimination alive in full salt water, and its potted electronics are built for pressure cycles that would kill a wading machine. It’s a specialist: heavy on land, no display, and overkill for a swim line. But for scuba jewelry recovery and wreck-adjacent hunting, nothing this side of commercial gear touches it.
6. Garrett Sea Hunter Mark II — Best Budget Dive Machine
Garrett Sea Hunter Mark II
- Pulse induction rated to 60 m (200 ft) for less than half the Excalibur's price.
- PI ignores salt and black sand entirely — maximum raw depth in the worst ground.
- Discrete Trash Elimination mode trims some junk without the usual PI dig-everything tax.
The Sea Hunter Mark II is the working diver’s answer to the Excalibur’s price tag. Pulse induction doesn’t care about salt, mineralized sand, or the ground effects that torment VLF machines — it just punches deep, to a rated 200 ft of submersion. The trade-off is discrimination: PI machines dig nearly everything, so this is a tool for clean bottoms and dedicated recovery work rather than trashy swim beaches. As a first dive detector, or a second machine that lives in the boat, it’s the value pick of the deep-water tier.
7. Nokta PulseDive 2-in-1 — Best Pocket Underwater Detector
Nokta PulseDive 2-in-1
- Converts from a compact scuba detector to a pinpointer in seconds — one tool, two jobs.
- Pulse induction, rated to 60 m (200 ft), immune to salt water and black sand.
- Fits in a BC pocket or carry-on — the detector that actually goes on vacation.
The PulseDive solves a problem every traveling detectorist knows: full-size machines don’t fly well. This pocket-sized PI unit is rated to the same 200 ft as the big dive detectors, swaps between a short scuba detector and a pinpointer in seconds, and shrugs off salt completely. Its small coil means modest range — think snorkeling sweeps and crevice work, not covering acres — but as a travel detector, a diver’s companion, or the underwater half of a land machine’s kit, it’s unbeatable per dollar and per kilogram.
Waterproof detecting by the numbers
- 5 m (16 ft) is the full-machine IP68 submersion rating Minelab specifies for the Equinox 900 — and Nokta matches it on the $299 Simplex Ultra, the cheapest genuinely submersible detector we recommend (manufacturer tech specs, 2026).
- 17 frequencies simultaneously is what Minelab’s BBS engine runs in the Excalibur II, rated to 66 m (200 ft) — the technology that keeps discrimination usable in full salt water, according to Minelab.
- 10 ft (3 m) is the submersion rating of Garrett’s AT series — but Garrett’s own spec sheet notes the bundled MS-3 wireless headphones are not submersible, the most common flooding mistake new water hunters make (Garrett, 2026).
- Coil-only waterproofing is the norm below ~$250: on machines like the Garrett ACE series, the coil survives a dunk but the control housing does not, per the manufacturers’ manuals — read the whole-machine depth rating before you buy.
- 60 m (200 ft) ratings now start under $200: Nokta’s ~$169 PulseDive matches the submersion depth of dive machines four times its price, converting between detector and pinpointer in seconds (Nokta, 2026).
How to choose a waterproof metal detector
- Match the rating to the water you’ll actually hunt. Rain and splash: any coil-waterproof machine survives. Wading and snorkeling: you want a full IP68 rating of 3–5 m (Equinox 900, Simplex Ultra, AT Max, Legend). Scuba: only the 60 m+ dive tier (Excalibur II, Sea Hunter, PulseDive) belongs on a tank dive.
- Check what’s rated — coil or machine. “Waterproof search coil” in a listing means the control box is not protected. If the manufacturer doesn’t state a whole-unit depth, assume there isn’t one.
- Salt water changes the tech, not just the seal. Conductive salt blinds single-frequency machines. For surf and salt wading you want multi-frequency or PI — our beach guide explains the physics and the picks.
- Wired headphones for submerged ears. No wireless headphone works under water. Every dive machine here ships with (or offers) hardwired waterproof phones — budget for them.
- Rinse everything after salt. Fresh-water rinse for coil, shaft, and connectors after every salt session. Corroded connectors kill more “waterproof” detectors than leaks do.
- Don’t forget recovery gear. A long-handled scoop or digging tool and a waterproof pinpointer matter even more in water, where every target you drop is gone for good.
The bottom line
The best waterproof metal detector of 2026 is the Minelab Equinox 900 — a true 5 m submersible that gives up nothing on land. The Nokta Simplex Ultra brings that same depth rating down to $299 for fresh-water hunters, the Garrett AT Max owns the rivers, and the Excalibur II and Sea Hunter Mark II take over where the snorkel ends. Total newcomers should start with our beginner’s guide to nail the fundamentals first — and if the coast is calling, the beach detector rankings sort the salt-sand specialists.
One checkout tip before you buy: a detector purchase — even a big one — is a single box, not a subscription habit. We break down why Amazon Prime rarely pays for itself in this hobby (and the one week a year it does) in Is Amazon Prime worth it for metal detecting shoppers?