The moon ring rear bike light generates a bright 25 lumens of light from a 1pce 15 chip circular ring cob high brightness led the cnc aluminium heat sink casing ensures that it doesnrsquot over heat on longer rides and the panted quick release bracket will fit all round and aero bars offering easy mounting this moon rear light is also usb rechargeable with a low battery charging and fully charged indicator the belt clip is useful for attaching the light to your cl