Strauss Bicycle Solar Tail Light and Bicycle Frame Bag, (Black) Solar powered the solar bike light full charged needs 4 hours(sunlight) and work for 6-8 hours Solar power, energy saving, environment friendly with 3 modes of light, slow flash, quick flash, steady light Touch screen: Tpu material, very sensitive to use the touch screen Waterproof: Both sides of the pockets with waterproof pu fabric, and the zipper is also waterproof design, there is no problem cycling in rain, but not recommended in a heavy rain for a long time The phone pouch: It is very convenient to take the phone pouch down from the panier bag, and easy to install on because of the design of the velcro for the pouch