SIMPLE AND VERSATILE: The bike light with silicone attachment provides ease of use for both the front and rear of the bike. Can also be used for outdoor activities such as hiking, camping or fishing. In addition, the rechargeable bike light can be used on electric scooters, strollers, backpacks. LED Light Modes: 30 lamp beads on each bike light, providing modern and bright lighting. Flashing, low brightness and high brightness modes last from 1.5 hours (flashing) to 4 hours (low). Efficient Charging: Fully rechargeable bike lights on the front and back. It only takes 1-1.5 hours to charge using the included pair of USB Type-C data cables. Shockproof and Waterproof IP45: Enjoy riding in rainy or foggy days, withstand any weather conditions. Mount them anywhere on your mountain bike without worrying about damaging your riding lights.