Feature rich, ultimate performance bike light set. AMPP 800 FEATURES: High power rechargeable headlight (800 lm) Powerful wide beam with OptiCube™ lens technology Excellent side visibility Large capacity lithium-ion rechargeable battery Built-in fast recharging circuit *Full charge in approx 3 hours (minimum) 3-level battery indicator (Blue: Above 50% Yellow: 30-50% Red: Less than 30%) USB rechargeable (Micro-USB cable included) Mode memory function Five light modes (High / Middle / Low / Daytime HyperConstant / Flashing) Turns on High mode with double-click of power button. FlexTight™ bracket Helmet mount and center fork bracket (optional) Weight: Only 136g RUNTIME: High mode 800 lumens： 1.5hrs Middle mode 400 lumens： 2hrs Low mode 200 lumens： 4hrs Daytime HyperConstant mode 800/200 lumens： 5hrs Flashing mode 200 lumens： 30hrs Charging time (From empty) : 3 hrs ViZ 300 FEATURES: 3 LEDs (300 lumens) Focused lens for maximum visibility Highly visible during daytime Superior 300 degree visibility Long rear beam projection Clear OptiCube™ 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 fits contemporary (Kammtail) aero seat post. Snap System™ bracket. Weight: Only 47g RUNTIME: Constant (30 lumens)：5 hrs Flashing (30 lumens)：45 hrs Group Ride (100 lumens)：8 hrs Daytime Hyperflash (300 lumens)：10 hrs Charging time (From empty) : 3 hrs