This is a set of two bike headlights, taillights and wheel lights with batteries included. They are super bright but will not dazzle drivers and the brightness can be adjusted between 80 and 200 lumens which can light up the road ahead. They are made form durable materials and so are string but they are also lightweight and are also weatherproof. They have 3 modes, high, medium, and strobe flashing for use in the day time. They are also easy to put on and take off again if needed as the front lights can also be used as powerful hand torches.