CVLIFE 800Lumens CREE XM-L LED 3 Modes Portable Bright Rechargeable Cycling Bicycle Headlight Cool Lighting Waterproof Head Flashlight Two CREE XM-L2 LED, life time up to 100000 hours. A 2600mAh Rechargeable lithium battery pack and a 4.2V charger Function Mode: High-Low-Strobe Waterproof & Skid-proof design Size:38mm X 60mm, Weight: 121g