The NiteRiderA(R) Swift(TM) 500 delivers everyday reliable performance in an economical ultra compact head light. Sporting features like an easy on and off handlebar strap mount, low battery indicator and to top it off, it's USB Rechargeable; making it the perfect light of choice for commuters and cycling enthusiasts.Although small in size, make no mistake; the Swift(TM) 500 packs a big punch with a maximum light output of 500 lumens! Powered by an internal Lithium Ion battery, in Walk Mode, the Swift(TM) 500 can run for up to twenty-five hours before it needs a charge.Easy on/off handlebar strap mount, low battery indicator and quick USB recharging make it an ideal headlight for commuters and recreational cyclistsFeatures 4 light levels plus 1 daylight flash mode; runs up to 25 hrs. in Walk mode before it needs a chargeInnovative collimator lens optimizes your field of viewFL1 Standard IP64-rated fiberglass-reinforced plastic housing resists water and dustWeight: 2.9 oz. Charge Time and Battery Life:Charge Time: 2 hoursHigh: 1.5 hoursLow: 9 hoursFlashing: 9.5 hours