Wurkkos WK20S 2000lm Scuba Diving Flashlight, Amphibious Flashlight, SST40 18650

Description 

1.LED bulb: SST40 LED, with lifespan of 100,000 hours
2.CCT Range: 5000-5500K
3.Voltage: 2.8-6 Volts
4.Battery used: 1* 18650 3.7 Volts Li-ion lithium battery (not included in package)
5.Size: 40mm(head) *25mm(body diameter)*144mm(length) 1.58 in(head) *0.98in(body diameter)*5.67in(length)
6.Weight: 0.39lb, excluding battery /178.5gram, excluding battery
7.Material: 6061 aircraft-grade aluminum alloy
8.Light Cup: orange peel reflector
9.Toughened glass lens with AR coating
10.Premium type Ⅲ hard-anodized anti-abrasive finish and better heat exchange
11.Side switch to turn on or adjust light modes from low to high
12.polarity protection, to protect from improper battery installation
13.The waterproof level is IPX-8, it can be used in underwater 150 meters. And it is suitable in diving, searching and other usage.
14.Mode Memory: Yes.
15.Low Voltage Protection: The light steps down to lower modes automatically when the voltage is lower,it turns off automatically when the voltage was lower than around 2.8 Volts,and please change another full battery or charge the battery.
16.Advanced Temperature Regulation (ATR) technology: ATR will adjust the brightness automatically when the temperature reaches 50℃ (122 °F) to prevent overheating.