Specification:
1, Emitter: 1x Luminus SST40 6000K - 6500K
2, Operating voltage: 3.0V – 4.2V
3, Driver: Constant current buck driver
4, Battery options: 1x 21700 rechargeable lithium-ion battery (choose 4000mAh or 5000mAh)
5, Dimension: 126mm (length) × 28mm (head diameter)
6, Weight: 73 grams (without battery)
7, Flashlight body: Aerospace grade 6061 grade aluminum alloy, hard-anodized to military grade specification type III
8, Toughened mineral glass lens
9, Water resistance i.a.w. IPX-8 (up to 2 meter under water, not for diving)
10, Mode Memory: memorizes the last brightness level used in the general modes (Eco/Low/Med/High)
11, Wrong polarity protection from improper battery installation
12, Low voltage warning: yes
13, Low voltage protection: yes
14, Advanced Temperature Regulation (ATR) technology: As the temperature rises, SP35 is programmed to automatically step down and step up the brightness. These thresholds are set at 45°C, 55°C and 65°C. The higher the temperature gets, the more the brightness will drop. Once temperature decreases, brightness will be increased again according to your selected mode.
More operation details, please check the manual