The Knog+ (pronounced plus) rear bike light is a super-bright, 100% waterproof and totally versatile USB rechargeable bicycle light. Mount the light to your seatpost, seat stays and pannier racks, or use the integrated wearable clip to attach the light to your t-shirt or backpack. More of a runner than a cyclist? No dramas. The Plus light also doubles up as a wearable night running light. Just attach the light to your tshirt, shorts, socks or headband using the smart integrated clip. With an output of 20 lumens and a run time of up to 40 hours in eco flash, the Plus ensures you are well seen to all other cyclists, road users and trail runners all night long. Can be mounted magnetically to handlebars or forks; integrated clip can attach to clothing or panniers for visibility on the run or on your bike IP67 tested and 100% waterproof against all elements, so you can ride rain or shine 5 light modes of steady, pulse, strobe, fancy flash and eco flash let you customize your visibility 20-lumen output; run time of up to 40 hrs. in eco flash mode Efficient Chip on Board (COB) LEDs designed to provide maximum brightness level for up to 90% of the battery burn time for each mode Tool-free removable silicone straps compatible with bars 22mm-32mm+ diameter; able to fit oversize bars Integrated USB plug doesn't require charging cable; plugs directly into USB ports and is designed to be exposed to the elements Includes magnetic mount and 2 interchangeable straps for bars 22-27mm and 28-32mm+  Charge Time: 4 hours Battery Life On High: 2 hours Battery Life On Low: 6 hours Battery Life Flashing: 40 hours Weight: 0.4 ounces