. The R2i is designed with simplicity in mind. It shares the same performance and lamp as the R2 but uses a neat alternate integrated 2 cell battery for those who like to keep it compact and tidy. Features: . 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 LEDs Coloured backlit switch indicates which power setting is being used ES (Energy status) battery uses an integrated power level button so no more guessing Weight: 252g for complete light unitBuy Hope Accessories from Chain Reaction Cycles, the World’s Largest Online Bike Store.