Bike Tail Light by LotFancy - Bicycle Rear Light for Lane Safety - 5 LED & 2 Laser Beam for Cycling Riding Warning 5 LED & 2 laser beam bicycle real light creates a safety lane around your bike, ensuring your safety while riding in darkness Easily installation, the bike tail light can clip to seat post or rear side strut The bicycle tail light is perfect accessory for for keen cyclists or anyone with safety concerns about the danger of riding at night Universal size, the rear bike light fits on almost every type of bike Long working hours; avoid direct eye exposure to the laser beam; batteries not included