Cat Eye VIZ150 Rear Light The new Cat Eye VIZ150 rear light produces 150 lumens of power and runtime in a compact and lightweight body. Technical Features 3 LEDs (150 lumens) Focused lens for maximum visibility Highly visible during daytime Superior 300 degree visibility Long rear beam projection OptiCubeT lens technology Lithium-ion rechargeable battery USB rechargeable (Micro-USB cable included) Low battery indicator 4 modes: Constant / Flashing / Group Ride / Daytime Hyperflash Mode memory function Battery Auto Save (The mode automatically changes to flashing when the battery power gets low.) New seat post bracket SP-15 which also fits contemporary (Kammtail) aero seatpost Snap SystemT bracket Only 27g in weight Designed in Japan RUNTIME: 10 Lm Constant (20 lumens):5 hrs Flashing (15 lumens):70 hrs Group Ride (50 lumens):11 hrs Daytime Hyperflash (150 lumens):15 hrs Charging time (From empty) : 3 hrs