CatEye VIZ Rear Bike Light

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 seatpost. Snap System bracket. Designed in Japan 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 low. Can be used in the daytime. All Weather IPX4; can be used in rainy weather