The NITECORE Thumb 250222 user manual explains features, operation, charging, safety, and warranty for the portable tiltable work light.
The Thumb is a compact, tiltable work light with two high‑performance LEDs delivering up to 85 lumens. It offers three brightness levels, a red‑light mode, and a 120° adjustable head that can be operated with one hand. The unit is built from durable polycarbonate, weighs 25 g, and is impact‑resistant to 1 m with an IP65 rating.
The manual covers how to switch brightness, lock and unlock the device, charge via the micro‑USB port (≈3 hours full charge), and outlines safety precautions, warranty terms, and accessories such as the key‑ring clip. Technical specifications such as dimensions, battery capacity, and runtime are also provided. This manual is written in Chinese.
| Maximum brightness | 85 lumens |
|---|---|
| Runtime (max) | 22 hours |
| Dimensions | 74 mm × 24 mm × 15.8 mm |
| Weight | 25 g |
| Ingress protection | IP65 |
| Brightness levels | 3 |
| Charging port | Micro‑USB |
Press both switches simultaneously; the red indicator blinks once to show lockout. Press both switches again to unlock.
While the light is on, repeatedly press the upper switch within three‑second intervals to cycle through high, mid, low, and blinking modes.