Front light: 5 ultra-bright LEDs that shine through a special lens, lighting ahead and providing 360° degree visibilty to the side. 'On' and flashing functions. Requires 4 x AAA batteries. Rear light: 5 ultra-bright LEDs with wide angle reflector for high visibility. 'On' and 6 flashing functions. Special clip can also be attached to clothing. Requires 2 x AAA batteries. Supplied with adjustable mounting brackets.