... energy saving,low power consumption, long service life.Light weight,easy to use and carry, and rainproof. Two modes: fast flash,constant ... energy saving, low power consumption, long service life.Light weight, easy to use and carry,and rainproof. Two modes:fast flash,constant, ... mounted on bicycle handle, seatpost, helmet, wheel, bag and so on. Flexible silicone surfaceSurface color:White,black,yellow, ...