The Cateye Rapid X2 Kinetic rear light is a game-changing movement-sensitive light that brightens as you brake, indicating to drivers behind you that you're slowing down. It's the perfect safety light for day and night.
A new revolution in lighting.
Bringing together the brightness and 180 degree visibility of the Rapid range, the new Kinetic light adds an additional dimension. With a built in sensor which detects the movement of the rider, the beam will automatically change from flash to constant when stopping.