The exposure redeye rear light is a small and compact light that sits comfortabley on the rear of the bike with the supplied bracket it offers great lighting with its 80 lumens that makes it ideal for a wide range of cycling activities in the dark thanks to the powerful seoul p4 led battery the rear bike light has a solid output that is combined with a diffused lens that disperses the lighting outwards for even more coverage and also helps to improve visibility out on the roads the waterproof