The stvzo road traffic regulations approved cube pro rear light ensures that you are always seen from behind in time the high luminosity is reached via three leds which are powered by two aaa batteries it can be easily attached onto every seat post thanks to the silicone strap material plasticweight 58 g features led rear light with 3 leds stvzo road traffic regulations approved two aaa batteries 2 stage battery indicator splashproof silicone strap fastening