The cube pro18 light set the light set is stvzo road traffic regulations approved and consists of a cube pro18 front light and a cube pro18 rear light with 18 lux and two aa batteries rear light pro with two aaa batteries the latest in led and battery technology ensures maximum energy efficiency while the lens has been specifically designed for glare free illumination the simple screw on mount system for the front light and the angled design of the rear light offer various op