Automatic / manual mode switching.
Manual mode: manual control switch light with brake sensing function.
Automatic mode: light sensing start/stop, moving start/stop, brake sensing. In automatic mode, when the tail light is off, the brake sensing function is still available.
Battery life: 33.5 h
Material: aluminum alloy
Size: 44 * 34mm/1.73*1.34\"
Function: sensitive light sensing start
Lamp bead: 20 LEDs
1. There may be slight size deviations due to manual measurement, different measuring methods and tools.
2. The picture may not reflect the actual color of the item because of different photographing light, angle and display monitor.
1 X Bicycle Rear Light
1 X Fixing Strap
1 X USB Cable