Urban Proof LED bike light Ultra bright is intended as a taillight with brake light function and can be easily charged with the charging cable added to the product. With a burn time of up to 4 hours, powerful beam (25 LM) and the different light modes, this LED bike light is ideal. Easy to attach and detach from the seat post. Specifications: Color: black, red Material: plastic Rechargeable: yes Burning time: 4 Beam: 25 lumens Mounting: seat post