TANSOREN 4000 Lumens Eagle Eye Ultra Bright Waterproof Bike Headlight with LED Light Dual Use Ways Designed for Convenience: 1.The headlamp supports fixing on the bicycle with the rubber ring, working as a bicycle lamp. 2. it can also working as a headlamp,comes with elastic rubber band sealing ring with the lamp, it's quite easy to install and use. The extremely lightweight build allows you to take your headlamp on the go with ease. Intelligent Circuit Control: 4 switch Modes(High-Low-Middle-Strobe),Long press to enter strobe mode to control the different brightness conveniently. It's perfect for Hunting, camping, traveling, hiking,Caving, Climbing, etc. Ultra Brightest and Super Long Battery Life: Includes 2* LED bulbs,designed for a longer lifespan. 6 ~ 8 hours after full charge;The bike headlights is compatible with rechargeable batteries. High-Quality and Waterproof:Each of our premium bike headlights are hand built with military grade, water resistant plastic - making them extra durable and excellent performance in waterproof wherever you may be. The bike headlight is used for both the indoors & outdoors. Package:TANSOREN LED Bike Headlights1 PCS, 4*18650 Battery Pack Batteries,1*Power Adapter, 2*Rubber Bands, 1*Helmet Band, 1* Battery pack bandages