new and high quality. Made of high quality material, durable and functional. Easy installation: The rechargeable bicycle light can be installed on the light tube and helmet. It can be installed and removed without any tools. and durable bicycle rear light that can be mounted on all bicycles, children's bicycles and adult bicycles. Can be used as a helmet light, backpack light, signal light, etc. A of lighting modes, which can be turned on at any time according to your needs The wireless control system installed on the head of the bicycle can easily control the function of the tail light to improve the safety when riding. Can be installed on bicycle seatposts, mountain bikes, road bikes, electric scooters, cycling backpacks, helmet lights, children's bikes, etc. Lights that bring you safe cycling Specification: Control mode: switch and remote control Charging : USB charging Charging time: 1.5-2H Discharging time: 4-5H size: 142 x 35mm Material: ABS colour: black Package Contents: 1 x taillights kit Only the above package content, other products are not included. Note: Light reflection 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.