Cateye SYNC Core/SYNC Kinetic

The lights connect via the Cateye SYNC app, allowing you to control both units simultaneously. When you turn one light on or off, the other follows suit, and you can customize modes or check battery levels for both devices directly from your smartphone.

Yes, the integrated acceleration sensor detects when you slow down and automatically increases the light's brightness to alert drivers behind you. It functions similarly to a car's brake light, adding an extra layer of safety during city commuting.

Absolutely. The system includes a specific 'Group Ride' mode designed to provide visibility without blinding the cyclists riding directly behind you, making it a considerate choice for organized group events.

Both lights use a versatile rubber strap mounting system. This allows for quick, tool-free installation on most standard handlebars and seatposts, making it easy to swap between bikes or remove them for charging.

The system features a Battery Auto Save function. When the charge drops to a critical level, the lights automatically switch to a flashing mode to extend runtime and ensure you remain visible until you can reach your destination.

The front light offers 500 lumens, which is sufficient for urban commuting and well-lit paths. If you frequently ride on completely unlit trails or at high speeds in total darkness, you may want a higher-lumen output, but for general road use, it provides a clear, reliable beam.