The Knog+ Twinpack is a set of super bright, 100% waterproof, and versatile USB rechargeable bike lights. Attach the lights to your handlebars, forks, seat posts, and stays, or use the integrated portable clip to secure the light to your shirt pocket or bags. More of a runner than a cyclist? No problem. The Plus light also serves as a portable running light. Simply attach the light using the built-in clip to your T-shirt, pants, socks, or headband. With a power output of 20 lumens at the back and a runtime of up to 20 hours in Eco-Flash mode, the Plus ensures that you are visible all night long to other cyclists, road users, and trail runners.