Great value cycle light set with impressive power output 200 lumen front / 100 lumen rear Opticube™ - Cateye's proprietary OptiCube™ lens technology maximizes brightness for greater visibility. Side Visibility - Provides visibility from the side to increase safety. USB Rechargeable - USB rechargeable products recharge the battery from any USB port. Snap System™ (ViZ 100) - Allows riders to place rear lights on various locations in both horizontal and vertical orientations. Low Battery Indicator - Alerts when remaining battery gets low. Daytime - Can be used in the daytime. All Weather IPX4 - Can be used in rainy weather. 360° Adjustable (AMPP 200) - Light turns 360° for a multitude of lighting positions. AMP200 FEATURES: Compact rechargeable headlight (200 lm) Up to 30 hours runtime Three light modes (High / Low / Flashing) Features - Easy to attach and remove, new & improved rubber band mount with 360° rotation. Excellent side visibility Low battery indicator Lithium-Ion USB rechargeable battery (Micro-USB cable included) Mode memory function Three light modes (High / Low / Flashing) Weight: Only 62g Designed in Japan RUNTIME: High (200 lumens)：1.5 hrs Low (40 lumens)：13 hrs Flashing (200 lumens)：30 hrs Charging time (From empty) : 2.5 hrs ViZ100 FEATURES: 3 LEDs (100 lumens) Focused lens for maximum visibility Highly visible during daytime Superior 300 degree visibility Long rear beam projection 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 also fits contemporary (Kammtail) aero seat post. Snap System™ bracket. Designed in Japan. Runtime: Constant (15 lumens)：5 hrs Flashing (10 lumens)：70 hrs Group Ride (35 lumens)：11 hrs Daytime Hyperflash (100 lumens)：15 hrs Charging time (From empty) : 3 hrs