Features: Can be used as Headlamp or Bicycie Light Model of LED: CREE T6 LED Output bright can come to max 1000 lumens [lm] Internal wiring applies the high efficient booster circuit, working voltage is wide and can utilize the batteries in the largest extent. Waterproofing design Aluminum alloy casing Aluminum alloy reflector 4 switch Mode: Strong Brightness / Medium Brightness / Low Brightness / Flashing Discharge Time: 180 mins (max brightness) Model of Battery required: 8.4V - 12V 4400mAh Battery Pack 50000 Hours Life Package Contains: 1 x CREE T6 Bulb LED Light unit ( Can be used as Headlamp or Bicycie Light ) 1 x Adjustable headband 2 x Rubber ring for installation 1 x Battery Pack 1 x Charger (100v-240v) 1 x Waterproof Bag