M-Wave Helios B rear light With this rear light, equipped with a battery carrier and 2 LEDs, you will certainly stand out in traffic. The rear light has an integrated reflector and an indicator, which shows when the battery voltage is low. The mounting bolt distance is adjustable from 50 mm to 80 mm. Specifications: Color: red Gender: unisex Material: plastic Number of LEDs: 2 Power supply: 1x AAA battery (included) Mounting bolt distance: adjustable from 50 mm to 80 mm