Rechargeable safety lights. Features: Offer the same great features of the original lights but can recharge by any USB port. Innovative rhombus T.I.R. Optic and light guide design delivers about 25 cd of light. And the unique quick release bracket can be easily installed and removed without the use of tools. Integrated plastic clip can be installed on a belt, bag clip, or anything else you can mount it to. Low battery indicator. Lampshade sides enhance the viewing angles increase the safety for road users. Works great as a helmet light with the optional adjustable velcro band.