Cygolite Metro 300 Lumen Headlight/Hotshot Taillight USB Rechargeable Bicycle Light System, Black Super bright 3.5 watt headlight with 300 lumens for distant throw. Ultra bright 2 watt red LED tail light for constant awareness Internal rechargeable batteries saves cost of replacement batteries Steady Pulse alerts motorist w/ flashes while constantly lighting the path; 5 modes: Med &gt; High &gt;Low &gt; Steady Pulse &gt; Flash; Last up to 25 hrs. Tail light: Adjustable flash speeds maximize visibility; 5 adjustable modes: Steady &gt; Zoom &gt; Triple &gt; Single &gt; Random; Lasts up to 500 hours Includes Metro 300 headlight, Hotshot 2w tail light, USB charging cable, seat post mount and Lock-tite handlebar mount