- LED light - Mode: 4 modes. (constant,slow flash,explosion lash and flash in order) - Brightness: 15 lumens - Product Dimension:7.5* 3* 2cm - Mounting Placement: bicycle seat post - Suitable Tube Diameter:12-34mm - High quality internal lithium battery,only need about 2 hours to be fully charged while be used for about 12 hours. - USB rechargeable bicycle taillight and auto cut off when fully charged. - Super waterproof,make you riding freely regardless of rain.
