LED: CREE XP-G R5 LED with a lifespan of 100,000 hours,reach:70m
Lumen output: 310 lm (maximum)
Mode: High>Low>Strobe>SOS>
Reflector: Smooth aluminum reflector
Circuit: High-efficiency DC-DC voltage booster circuit with constant current
Glass: Toughened ultra-clear glass lens
Case material: Aircraft-grade aluminum,anodized for corrosion resistance and durability
Color: Black 
Operating voltage:  0.9V- 4.5V
Waterproof: O-ring sealed for water resistance
Dimension (l x D x H): 96*25*21mm Weight: 60g (excluding batteries)
Packaging type: Gift box