SimplexSingle frequency
Simplex Lite
15 kHzFrequency
16 ftDetector, IP68
2.6 lbWeight
View on Amazon Simplex Lite (opens in a new tab)Affiliate link
Nokta · Single frequency detector
Nokta Simplex Ultra
The Simplex Ultra runs one frequency, 15 kHz, and the whole detector is rated IP68, submersible to 16 ft (5 m). It weighs 2.6 lb (1.2 kg) and ships with an 11-inch DD coil.
15 kHzOne frequency
16 ftWaterproof, IP68
2.6 lbWeight, 1.2 kg
| Technology | Single frequency |
|---|---|
| Frequencies | 15 kHz |
| Waterproofing | IP68, detector submersible to 16 ft (5 m) |
| Weight | 2.6 lb (1.2 kg) |
| Coil | SX28, 11-inch round DD |
| Battery | 2300 mAh lithium polymer, built in |
| Battery life | Up to 12 hApprox. 12 h (user manual) |
| Search modes | Field, Park, 4 Tone, 99 Tone, Beach, All Metal |
| Sensitivity | 30 levels |
| Light | Yes |
| Target ID | 01 to 99 |
| Display | Graphic LCD, backlit |
| Warranty | 3 years |
| Status | In the current range |
Source: Nokta, Simplex Ultra product page (opens in a new tab), read Oct. 16, 2026.
Source: Nokta, Simplex new generation (Lite, BT, Ultra) user manual (EN, PDF) (opens in a new tab), read Oct. 17, 2026.
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How it differs from its neighbors
The Simplex Lite shares the frequency, weight, water rating and battery. The Ultra adds the 4 Tone and 99 Tone modes, and Bluetooth, which the other model lacks. It comes with the 11-inch round SX28, while the standard Lite has the 9.5 x 6-inch elliptical SX24. Nokta also sells that model with the SX28.
Both list 30 levels of sensitivity, a target ID from 01 to 99, a Graphic LCD, backlit and a warranty of 3 years.
The older Simplex+ is listed by Nokta as discontinued. It ran 12 kHz and weighed 2.9 lb, with a rating of IP68 to 10 ft (3 m).
| Spec | DetectorSimplex Ultra | DetectorSimplex Lite |
|---|---|---|
| Frequencies | 15 kHz | 15 kHz |
| Waterproofing | 16 ftDetector, IP68, 5 m | 16 ftDetector, IP68, 5 m |
| Weight | 2.6 lb1.2 kg | 2.6 lb1.2 kg |
| Battery | 2300 mAh lithium polymer, built in | 2300 mAh lithium polymer, built in |
| Target ID | 01 to 99 | 01 to 99 |
| Display | Graphic LCD, backlit | Graphic LCD, backlit |
View on Amazon Simplex Ultra (opens in a new tab)Affiliate link | View on Amazon Simplex Lite (opens in a new tab)Affiliate link |
Facts from Nokta's page for each model, read Oct. 16, 2026.
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Other Nokta models to compare
Three facts per model on one scale; open a card for its full spec sheet.
SimplexSingle frequency
Simplex+
12 kHzFrequency
10 ftDetector, IP68
2.9 lbWeight
No listing found under this exact model number.
LegendMulti-frequency
Legend
4-40 kHzFrequency
16 ftDetector, IP68
3 lbWeight
View on Amazon Legend (opens in a new tab)Affiliate link
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Questions about the Simplex Ultra
Answered from Nokta's product page, read Oct. 16, 2026.
Yes, as a whole. Nokta rates it IP68, submersible to 16 ft (5 m).
The Ultra adds two extra search modes, Bluetooth and an 11-inch coil. Both weigh 2.6 lb and run 15 kHz.
About 12 h, per Nokta's user manual, on a 2300 mAh lithium battery, built in.
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