WK40 has 4 color LEDs, white, red, blue and green, which can be turned on separately, and can also be colored gradient and flashing. There are two switches, the tail switch adjusts the mode, and the magnetic ring switch adjusts the brightness.It is powered by one 21700 Li-ion rechargeable battery and it is rechargeable via USB-C for optimum convenience.
- Emitter: white LUMINUS SST20 6000-6500K
- Red beam: LUMINUS SST-20-DR-B120-V660
- Green beam: LUMINUS SST-10-G-B130-E530
- Blue beam: LUMINUS SST-10-B-B130-N450
- Driver: Buck constant current circuit
- Beam angle:125°
- Operating voltage: 2.7V – 4.2V
- Battery options: 1* 21700 Li-Ion battery; 20350 li-Ion battery with short tube
- Dimension: 123.3mm (length) x 33mm (head diameter)
- Weight: 125 ±1 grams (without battery)
- Toughened mineral glass lens
- Water resistance i.a.w. IP68
- Mode Memory: memorizes the last brightness level used in the general modes
- Reverse polarity protection to protect against improper battery installation.
- LVP: while on, if the battery voltage is lower than 2.7V, it turns off automatically.
- Advanced Temperature Regulation (ATR) technology: ATR will reduce the brightness level automatically when the driver temperature reaches 55℃ to prevent overheating.
What's in the box: WK40 Flashlight with 21700 Battery, 2 X Spare O-rings, Diffuser, USB-C Charging Cord, Short Tube to convert to 20350 Battery (20350 battery not included)