Cateye Sync Set Core & Kinetic Front & Rear Light SetCateye Sync Core Front Light.With 500 lumens and excellent side visibility, the SYNC Core gives you the power to see and be seen. Can be used alone orbetter stillcombined with other CatEyeSYNCenabled lights for unparalleled levels of 360-degree visibility, day or night.Specifications:Compact and lightweight high power rechargeable headlight (500lm)Excellent daytime visibility in Daytime HyperConstant modeSuperior side visibilityRound beam pattern with OptiCubelens technologyBuilt-in fast recharging circuitLithium-ion rechargeable batteryUSB rechargeable (Micro-USB cable included)5 light modes * Charging time: 3-6 hrsMode memory functionFlexTightbracketOptional helmet mount, center fork bracket and out-front bracket 2 availableCateye Sync Kinetic Rear Light.With a built-in accelerometer that switches to burst mode as you decelerate, SYNC Kinetic gives you an extra level of defense. Use alone or in combination with other mo