Supersleek, fully integrated design allos for uncluttered fitting to go with great perfromance 2 cree LED's produce an awesome 1300 lumens (1000) measured 6 different power options so you can customize your burntime Uses an integrated 2 cell ES (Energy status battery) Features a backlit power switch to indicate which power setting is being used. Produces 1300 lumens (1000 measured) 6 different power settings Includes bayonet handlebar and helmet mount fittings 3200mAh 2 cell rechargeable ES integrated Li-Lon battery Burn time 1 hour-30 hours 2 powerful cree LED's Coloured backlit switch indicates which power setting is being used Weight 252g for complete light unit ES (Energy status) battery uses an integrated power level button so no more guessing