Bike light is made of ABS material, to use. Its directional flashing indicates travel safety factor is greatly enhanced. 4-IN-1 REMOTE CONTROL BIKE TAILLIGHT: Taillight, brake light, anti-theft alarm, bike bell. It has 5 light modes: Slow Flashing-Breathing-Blinking-Steady Light -OFF easily be by remote control. wireless range about 98ft-196ft. Easy to search you vehicle by press button on the remote. POWER-SAVING ON/OFF: In the intelligent mode( Slow Flashing/ Breathing) , the light is automatically turn on or off according to the ambient brightness. In the dark, if you stop for more than 30s, it will auto urn off to save power; if you ride again, it will automatically light up. VIBRATION ALARM: Anti-theft bicycle alarm triggered by vibration, up to 110db LOUD alarm, effectively to scare off thieves and attract people's attention. 7 levels adjustable sensitivity from gently touch to push or beat. Colour:black Material: ABS Package Contents: 1 x tail light 1 x remote control 1 x USB