ETpower&reg; 5000 Lumens XM-L U2 LED Bicycle Light & 6400mAh Battery Pack & Charger , 4 Modes Waterproof LED Bike Lmap headLight Super Bright Lighting Lamp for Outdoor Sports Like Cmaping Hiking(BLACK) Super Bright 5000Lm Bicycle Flashlight Headlamp Output bright can come to max 5000 lumen. Can be used as Headlamp or Bicycle Headlight. Internal wiring applies high efficient booster circuit utilize batteries in the largest extent. Perfect fit for outdoor sports, such as camping, traveling, hiking. Waterproofing design,Easy to install and use.