Lil' Cobber Rear produces an incredible 330º of light, so you'll be clearly seen from all angles. In an increasingly busy world, this bike light is brilliantly effective at attracting attention and helping keep you safe on the road. Packing 50 lumens this Lil' Cobber is seriously bright. The Cobber has integrated USB recharging, is 100% waterproof and you can program the settings using the Modemaker app. It mounts with tool-less removable silicone straps for bars/seat posts 22 – 32mm+ in diameter with magnetic mount (aero Mount also included). If you are looking for the best rear commuter bike light around, look no further.