Description:Solid、 durable、 extend strongMulti fixation3 modes: keep light、 Fast flash、 Flash、Water resistant shower proof design - is not afraid of rain floodingInstall or remove without any tools only need 3 secondsOne-Touch switch design、 easy operationPower by: 1 X CR2032 battery(Not Included)Weight:23g;Length:13cm;Width: 3.5cmMaterials: Flexible waterproof siliconeSilicone Color: WhiteLight Color: Blue、 Red、 GreenPackage:1xBike Wheel Light