180 Degree Visibility Bicycle Taillight: This bike turn signal light uses the latest version of LED lights, which can increase the safety factor in a low visibility environment, such as at night, fog, rain. The bicycle tail lights can easily attract attention even during the day USB Rechargeable: Adopt USB rechargeable design. You can use any USB rechargeable device to charge this bicycle rear light. You don't have to worry about the trouble of always changing the battery. The cycling safety warning light has a waterproof design, so you can ride in the rain with confidence. Note: Do not soak in water. 5 Modes to Choose: The bike smart light mode can be changed at any time through the wireless remote control without delay. EASY INSTALLATION: The mount straps are designed with three openings that tightly fit around many size seat posts, handlebars, seat risers, backpacks, helmets and stretch to keep lights secure and firm. They can be easily loosen and fasten, and no tools are required. Widely Used: Wireless turning signal bike light is not limited to be used on bicycles. You can use it in any nighttime environments such as, strollers, pets, jogging, walking, road emergency and outdoor. Very effective in reducing the probability of accidents. size: 101 x 41mm Material: ABS colour: black Package Contents: 1 x Bike Taillight 1 x remote control 1 x USB cable 2 x straps Only the above package content, other products are not included. Note: Light 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.