Niterider Swift 500 LightMany people believe that bike lights are only needed at night. The truth is a daytime running light is actually just as important. 80% of cyclist collisions happen during the day. The Swift 500 utilizes five light settings allowing you to fine-tune your lighting for various times of the day. Illuminating both near and far, the Swift 500 Light has a lithium ion battery that has a running time as long as 25 hours! With a charge time of 2 to 3 hours and a max lumen output of 500 lumens, the Swift 500 will light your way no matter where you go.Features500 lumen max output4 solid and 1 flashing modeto choose fromLow 20 lumen flashlight modethat lasts 25 hoursUniversal mountfits handlebars up to 35mmWeight:82g (light, handlebar mount)Running Times100 lumens -9 hours225 lumens -3 hours500 lumens -1.5 hours20 lumens (flashlight mode) -25 hoursDaytime Flash -9.5 hoursIncludesLED head lightInternal Li-Ion batteryBuilt-in handlebar mountUSB charging cable | Niterider Swift 500 Light 500 Lumens