When you absolutely, positively need to be seen, day or night, rain or shine, trust cateye’s brightest rear safety light. The viz450 features 5 leds, 300-degree visibility, opticube lens technology, and makes sure you stand out with the power of daytime hyperflash mode.Key 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 visibility: provides 300 visibility from the side to increase safety.Low battery indicator: alerts when remaining battery gets lowusb rechargeable: usb rechargeable products recharge that batteries from any usb port.Daytime: can be used in the daytime.All...