Are you still looking for a bike tail light? Then, our bike tail light is carefully prepared for you. USB charging design, you never have to worry about running out of power. It is easy to install and will not hurt you. It is one of the for you. Features - Material: ABS, aluminum alloy, rubber. - Size: Approx. 4.00X4.00X3.50cm/1.57X1.57X1.38in. - Scope of Application of Rubber Belt: It can be stretched 12cm/4.72inch, suitable for handlebars or seatposts with a diameter of 22-38mm/0.86-1.49inch. - Charging Mode: USB charging. - Lighting Mode: 100% lighting, 50% lighting, slow flicker, fast flashing. - Using aluminum alloy, rubber and ABS material of and fine craftsmanship, strong and sturdy for long serving life. - It can tightly fit around most size handlebars and seat posts. - It comes with a USB cable that charges from your computer, power bank or any device with a USB port. - Safety warning light, suitable for cycling, camping, fishing, picnic, etc. - Easy to install and disassemble, suitable for professional or personal use. Package list: 1 x Bike Tail Light 2 x Rubber Straps 1 x USB Cable