CatEye: Safety you’ll never notice, but those around you will Bringing together the brightness and 180 degree visibility of the Rapid range, the Cateye Rapid X2 Kinetic light adds an additional dimension. With an integrated accelerometer to detect the movement of the rider, the beam will automatically change from flashing mode (10 Lumens) to constant “Burst” mode (50 Lumens) for 2.5 secs under sudden deceleration. Make your presence known with the Rapid Kinetic X2. Ultra bright strip COB LED technology – maximum 50 Lumen outputUSB Li-Polymer rechargeable batterySupersonically welded for weather resistanceVersatile rubber band mounting system (12-32mm) for seatposts and seatstaysKinetic modeBattery indicatorBattery Auto Save, converts to flashing mode so you’re never left in the darkRecharge time: 2 hrsMode: Output, Runtime(when not using Kinetic mode)Constant: 10Lm, 5 hrs Rapid: 15Lm, 16 hrsFlashing: 15Lm, 30 hrs