Description : 1 Watt / 3 Watt LED aluminium alloy flashlight Feature : *Tailcap rubber switch *The flashlight Water-proof & shock-proof *ADD CMOS chip Regulated Circuit (constant electricity , isobarically , prevent excessive voltage) for protect LEDs well-balanced lighting *Type Ⅲ Hard Anodization for Extreme Corrosion and wear Resistance (option) *Precision Machined Aircraft Grade Crush Resistant Aluminum *Low Heat-Energy Efficient Durable Diodes (LED only) Runtime : over 5 / 3 hours (bettery battery) Battery type : 2 x 3V CR123A batteries or 1 pc CR17670 rechargeable lithium battery Distance : over 60 / 130 m LED life : over 50,000 hours