The Oxford Ultratorch Mini Plus USB Light Set is a 100 lumen front light, designed to be mounted on your handlebars. The compact size is handy for commuters and it is very easy to mount and take off your bike for charging. Plug in to a computer for convenient charging. Oxford Ultratorch Mini Plus USB Front Light Features 100 Lumens max output USB Rechargeable  3.7v 220mAH Li-Pol battery Waterproof IP65 Integrated tool free handlebar bracket Oxford Ultratorch Mini Plus USB Rear Light Features   15 Lumens max output  USB Rechargeable 3.7v 220mAH Li-Pol Battery Waterproof IP65 Integrated tool free seatpost bracket