Quick Answer: The Nokta Simplex Ultra ($299) is a single-frequency 11 kHz detector with a 99-segment target ID scale, built-in low-latency Bluetooth, and a full-machine IP68 rating to 5 m (16 ft) — the same submersion depth Nokta puts on its $999 flagship. At 1.2 kg (2.6 lb) it’s light enough for all-day swinging, and for parks, fields, and freshwater sites it remains the easiest answer to “what should my first real detector be?”
The Simplex line has done more to make waterproof detecting affordable than any other product family in the hobby, and the Ultra sits at the top of it. It’s the standing recommendation in our main detector rankings, our Nokta lineup guide, and our waterproof detector guide — three separate buying guides that all land on the same $299 machine for different reasons. This review checks whether that reputation holds up on its own.
Nokta Simplex Ultra at a glance
| Spec | Nokta Simplex Ultra |
|---|---|
| Price | $299 |
| Frequency | 11 kHz, single frequency |
| Target ID | 01–99 digital scale |
| Coil included | 11-inch DD |
| Waterproofing | IP68, 5 m (16 ft), full machine |
| Weight | 1.2 kg (2.6 lb) |
| Audio | Built-in low-latency Bluetooth + vibration alerts |
| Best for | First-time buyers, parks, fields, freshwater sites |
Nokta Simplex Ultra
- Single 11 kHz frequency with a large 11-inch DD coil and a 99-segment digital target ID.
- Built-in low-latency Bluetooth — no dongle, no audio lag, no separate headphone purchase.
- IP68 submersible to 5 m (16 ft) with vibration alerts, plus a bright backlit display for low light.
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Built-in Bluetooth and why it matters more than the spec sheet suggests
Most beginner-tier detectors either skip wireless audio entirely or pair over standard Bluetooth with enough delay that the tone arrives a beat after your swing has already passed the target — exactly the lag problem covered in our detector headphones guide. The Simplex Ultra solves it in the box: low-latency Bluetooth is built into the control housing, so there’s no dongle to lose and no separate wireless-headphone purchase to budget for. On a $299 machine, that alone would be a reasonable value argument even before the waterproofing.
11 kHz, a 99-segment target ID, and the honest single-frequency tradeoff
The Ultra runs one fixed 11 kHz frequency rather than the shifting multi-frequency engines found on machines like the Minelab Equinox 900, but it still reads a full 01–99 digital target ID off an 11-inch DD stock coil — enough resolution to separate a coin from common trash in most dry-land ground. The tradeoff shows up specifically in wet salt sand: a single-frequency machine loses target ID stability there, which is pure physics rather than a flaw in this particular unit (our beach guide breaks down why). For parks, fields, dry beaches, and fresh water — the sites most first-time buyers actually hunt — that limitation rarely comes up.
IP68 to 5 m: the same depth rating as the $999 flagship
Here’s the number that does the most work in this review: Nokta rates the entire Simplex Ultra, not just the coil, to 5 m (16 ft) IP68 — identical to the submersion depth on the brand’s $999 Legend 2 and on the $999 Minelab Equinox 900. That means a $299 first detector goes exactly as deep underwater as machines costing more than three times as much. Vibration alerts back up the audio underwater, where tones are hard to hear through a hood or over current noise, and the whole package weighs a swingable 1.2 kg (2.6 lb). Compare that against Garrett’s ACE series, which is coil-only waterproof at any price point — a gap our Garrett vs Minelab and Nokta vs Garrett comparisons cover in more depth.
Simplex Ultra vs Simplex LITE: is the extra $50 worth it?
| Nokta Simplex Ultra | Nokta Simplex LITE | |
|---|---|---|
| Price | $299 | ~$249 |
| Frequency | 11 kHz | 15 kHz |
| Bluetooth | Built-in, low-latency | Not included |
| Waterproofing | IP68, 5 m | IP68, 5 m |
| Weight | 1.2 kg (2.6 lb) | 1.2 kg (2.6 lb) |
Both machines share Nokta’s full 5 m submersion floor and near-identical weight, so the decision comes down to one feature: built-in wireless audio. For most buyers the Ultra’s $50 premium is worth it — pairing a separate Bluetooth receiver to the LITE later usually costs more than the gap between the two models. Our full Nokta lineup guide ranks the complete catalog, including the multi-frequency Score series, if budget isn’t the only factor.
Who should buy the Nokta Simplex Ultra
- First-time buyers — the 99-segment target ID and low-latency Bluetooth make it approachable without feeling like a toy, per our beginner’s guide.
- Freshwater and shallow-water hunters — 5 m (16 ft) IP68 covers lakes, rivers, and pools well beyond what a rainproof-only machine can handle.
- Anyone on a tight but real budget — at $299 it undercuts most multi-frequency machines while still beating cheaper detectors on waterproofing and target ID resolution.
- Not dedicated salt-beach hunters — single-frequency machines struggle with target ID in wet salt sand; see our waterproof detector guide for multi-frequency alternatives built for that ground.
- Verify the seller before buying. Nokta backs its consumer detectors with a 3-year warranty through authorized dealers — check the “Sold by” line on any Amazon listing before checkout.
The bottom line
The Nokta Simplex Ultra earns its reputation as the smartest first detector under $300 — a full 5 m submersion rating, built-in low-latency Bluetooth, and a 99-segment target ID scale that punches well above its price. Step down to the Simplex LITE only if the extra $50 genuinely matters, and step up to the Nokta Double Score once multi-frequency ground balance becomes worth paying for. Whatever you land on, settle the brand question for good in our Nokta vs Garrett comparison.