Strauss Bicycle Solar Tail Light and Bicycle Flash Tail Light with Laser (Black) Material: Other In-Box Contents: 1 Solar powered the solar bike light full charged needs 4 hours(sunlight) and work for 6-8 hours Solar power, energy saving with 3 modes of light, slow flash, quick flash, steady light The 5 led and 2 red laser beam bicycle safety light creates a virtual lane around your bike, helping to protect and keep you safe from incidents during night-time cycling or in the dark