Cateye: Super bright 450 Lumen visibility day or night. Get the ultimate power in rear bike lighting with the all new ViZ450 which pumps out an impressive 450 lumens thanks to CatEye?s OptiCube? lens technology. The high powered 5 LED & versatile ViZ450 stands out with the powerful of Daytime Hyperflash? mode and the friendliness of Group Ride mode. In addition, the ViZ 450 has fast charging and an impressive 65-hour maximum runtime to keep you going on those epic journeys. The innovative new Snap System? bracket is simple to fit and place in your preferred position on the bike including modern flat back aero seat posts. The modern design makes this safety light into a stylish essential accessory to keep you riding anytime, day or night. The ViZ Family of lights all come with our highly visible 300 side visibility, to give you more confidence & safety the whole year round. FEATURES:5 LEDs (450 lm)Up to 65 hours runtimeFocused lens for maximum visibilityHighly visible during daytimeSuperior 300 degree visibilityLong rear beam projectionClear OptiCube? lens technologyLithium-ion rechargeable batteryUSB rechargeable (Micro-USB cable included)Low battery indicator4 modes: Constant / Flashing / Group Ride / Daytime HyperflashMode memory functionBattery Auto Save (The mode automatically changes to flashing when the battery power gets low.)New seat post bracket SP-15 which fits contemporary (Kammtail) aero seatpostSnap System? bracketWeight: Only 45gDesigned in JapanRUNTIME:Constant (40 lumens):5 hrsFlashing (40 lumens):65 hrsGroup Ride (130 lumens):10 hrsDaytime Hyperflash (450 lumens):14 hrsCharging time (From empty) : 3 hrsTECHNOLOGIES:Opticube? Our proprietary OptiCube? lens technology maximizes brightness for greater visibility.Snap System?Allows riders to place rear lights on various locations in both horizontal and vertical orientations.Side VisibilityProvides 300 visibility from the side to increase safety.Low Battery IndicatorAlerts when remaining battery gets lowUSB RechargeableUSB rechargeable products recharge that batteries from any USB port.DaytimeCan be used in the daytime.All Weather IPX4Can be used in rainy weather.