Magicshine SEEMEE 20 is a creative safe angle design bike tail light. High powered COB red LED light source producing a max output of 20 lumens, capable of 180 degrees of visibility. High powered COB red LED light source producing a max output of 20 lumens, capable of 180 degrees of visibility. One constant and 2 flash modes in 3 different brightness settings. Micro USB plug under its waterproof silicone port cover allows the bike taillight to be charged almost anywhere. Built in Lithium battery provides one and a half hour runtime on brightest constant mode, and 3 to 4 hours of continuous use on either of the flash modes on brightest.The built in mounting base for the Seemee 20 rear bike light has a degree of slant so when installed, the lumens point straight backwards, securely held in place with silicone o-ring, the tail light is easily mounted and dismounted for each ride. Power button is big and built to the center of the unit, easily accessible with gloves.