Features: 1. This is the newest bike lights in 2013 2. For the leader of night riding,it will bring you infinite light 3. Can be used as Headlamp or Bicycie Light 4. Waterproofing design 5. Internal wiring applies the high efficient booster circuit,can utilize the batteries in the largest extent Specifications: 1. Model of LED: 5 x CREE XM-L T6 White LED 2. Output: can come to max 7000 lumens 3. Material: Aluminum alloy casing,Aluminum alloy reflector 4. 3 switch Mode: high / low / strobe 5. Powered by: 1 x 8.4v 6400mAh Battery Pack(6 x 18650 rechargeable batteries) 6. Charger: 100v-240v Battery Charger 7. Colour: Black 8. Dimension: 53mm x 56mm 9. Weight: 620g Package includes: 1 x 5x CREE XM-L T6 LED Light unit 1 x Adjustable headband 2 x Rubber ring for installation 1 x 8.4v 6400mAh Battery Pack 1 x AC/DC Adapter Should you have any problem, please don"t hesitate to contact us and we will do our best for you!