USB Rechargeable Bicycle Light Night Riding Waterproof Bicycle Light With Horn Features Lumen headlights use the latest LED technology to illuminate your route and stay visible at night and during the day. The headlights have 3 general lighting modes (strong light/medium light/flashing light). This car light does not need to replace the battery and can be charged with a USB cable. You only need to spend a few seconds to complete the installation of the lights. The installation process does not require the use of screwdrivers, wrenches and other tools and accessories. The lights are waterproof, and will not stop working due to water ingress even in heavy rain. With a 120 decibel horn, the sound is loud and can alert pedestrians on the road when riding. Parameter Weight : about 100g TRIHIY USB Rechargeable Bicycle Light Night Riding Waterproof Bicycle Light With Horn Lumen headlights use the latest LED technology to illuminate your route and stay visible at night and during the day. The headlights have 3 general lighting modes (strong light/medium light/flashing light). This car light does not need to replace the battery and can be charged with a USB cable. You only need to spend a few seconds to complete the installation of the lights. The installation process does not require the use of screwdrivers, wrenches and other tools and accessories.