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 programme the settings using Modemaker. Integrated USB Plug 100% waterproof USB Rechargeable Lithium Polymer battery Tool-less removable silicone straps for bars/seat posts 22 - 32mm+ diameter with magnetic mount. Aero Mount also included. Max output: 30 lumens (1.4 hours) Min output: 21 lumens (1.8 hours) Accessories included: Standard Mount Aero Mount 3x interchangeable straps for bars/seat posts 22-27mm / 28-32mm+ USB extension