RoGer Happy Rider Bicycle tail light

Bicycle tail lamp with built-in 350mAh battery. - seven lighting modes of the flashlight: constant, fast flash, slow flash, slow transition, fast transition, very fast transition, transition "up-down and back"- charging via microUSB cable- battery capacity: 350 mAh- waterproof: yes IPX-6- dimensions: 7.5 x 3 cm- weight: 13 g