Ultra-Bright and Ultra-Long Run Time: The bike headlight has 3 LEDs with a maximum output of 1200 lumens to illuminate the road you ride at night. The running time of the front light is 5-15 hours, and the running time of the tail light is 50-80 hours, which can meet your long-term riding lighting needs.Charging Input and Output: In addition to the normal USB input charging function, this bicycle headlight also has a USB output function. It has a power bank function that can charge your phone. This is very important when riding outdoors.DURABLE AND EASY TO INSTALL: Made of high-quality aluminum alloy housing, it is very sturdy with good impact resistance and heat dissipation. The headlights and taillights are very easy to install without tools.Versatile Uses: Headlights and taillights can be used in a wide variety of scenarios. Perfect for biking, fishing, running, dog walking, hiking, camping, tire changing, night family, kids activities or other activities. In special cases, it can also be used as an emergency flashlight.color:BlackMaterial:plasticPackage Contents:1 x Bike headlight1 x Bike rear light1 x USB cableOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.