A new revolution in lightingbringing 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 stoppingits time for road safety to run round the clock introducing the rapid x2 kinetic a movement sensitive day and nighttime light for your ride the rapid x2 kinetic is a 50 lumen usb rechargeable safety ligh