Big things come in small packages and the NiteRiderA(R) Lumina(TM) Micro 650 is the proof. The Lumina(TM) Micro 650 delivers a powerful punch with 650 lumens of light output, helping you to safely navigate your ride.As with all Luminas in the series, it features a low battery indicator - when the power button changes from blue to red color this indicates that there is approximately 15-20% battery life remaining.RUN TIMESLow - 10:30h at 130 LumensMed - 4:30h at 325 LumensHigh - 2:00h at 650 LumensFlash - 12:30h at 650 LumensWalk - 50:00h at 40 LumensDaylight Visible 650 lumen output head lightAll New Collimator Lens, produces a generous even widespread beamCREEA(R) LED at 6000kRide safely with Daylight Flash Mode!4 Light Levels plus 1 Daylight Flash ModeFL1 Standard IP64, dust and water-resistantSecure on and off-road capable Handlebar MountFits standard and oversize 35mm handlebarsCompact and lightweight design that's perfect for helmet mounting (Helmet Mount Sold Separately)Convenient USB rechargeableLow battery indicatorLock Mode, perfect for use during storage and transporting the light.Press and hold power button for 8-10 seconds to lock out operation of light.