Cateye Sync Kinetic USB Rechargeable 40 Lumens LED Rear Bike 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 models in the CatEyeSYNC™ family for unparalleled levels of 360-degree visibility, day or night.


  • Built-in acceleration sensor for Kinetic mode (Automatically turns on with 50 lumen brightness when bike deceleration is detected).
  • Excellent daytime visibility in Daytime HyperFlash mode.
  • Group Ride mode eye-friendly to team riders behind.
  • Superior side visibility.
  • OptiCube™ lens technology.
  • Lithium Polymer rechargeable battery.
  • USB rechargeable (Micro-USB cable included).
  • Mode memory function.
  • Battery Auto Save (The mode automatically changes to flashing when the battery power gets low).
  • Synchronize all SYNC lights.
  • One touch turns all lights on/off.
  • Synchronize light modes and flashing timing for enhanced visibility (SYNC Wearable, SYNC Kinetic).
  • Synchronized Kinetic mode for dynamic visibility (when used with SYNC Kinetic).
  • Control with smartphone app - pair the lights (up to seven lights), turn on/off light mode synchronization, view remaining battery level, turn on/off the lights, turn on/off synchronization with other lights, find me function lets the light flashing by tapping the button on app.
  • Specification

    • Light source: Red LED X 5.
    • Battery: Lithium Polymer rechargeable battery.
    • Runtime: High (40 lumens): 1.5 hrs, Low (5 lumens): 15 hrs, Flashing (30 lumens):50 hrs, Rapid (50 lumens):20 hrs, Group Ride (40 lumens):15 hrs, Daytime HyperFlash (50 lumens):30 hrs.
    • Runtime (When Kinetic mode is enabled 60 times per hour): High (40 lumens):1.4 hrs, Low (5 lumens):6 hrs, Flashing (30 lumens):7 hrs, Rapid (50 lumens):6 hrs, Group Ride (40 lumens):6 hrs, Daytime HyperFlash (50 lumens):7 hrs.
    • Mount size: Rubber band mount (fits f 26.0-31.8mm).
    • Recharge time: 2.5 hrs (USB recharge).
    • Weight: 43g (with battery).
    • Dimensions: 74.5 x 26 x 28mm.