Although small in size, the Swift packs high lumens in a one piece, USB rechargeable light. A low-profile light with an easy to use rubber strap mount great for switching between multiply bikes. This light is an integral part of daily commutes or road rides, and for staying safe day or night. Lightweight and robust design 4 Light Levels plus Daylight Flash Mode Run time 1:30 to 3:15 depending on mode