Strauss Bicycle USB Rechargeable 5 LED Head Light, (White) SAFETY LIGHT: it is essential for cyclist to use USB rechargeable cycling light in the dark or foggy morning to ensure their clear view, red light commonly serves as bike taillight while white light serves as headlight. USB RECHARGEABLE – Save the Hassle to Replace Batteries Every Week! They charge from your computer or any device with a USB port. Takes 2-3 hours to fully charge and has a Runtime of 4-10 hours on the highest setting EASY TO INSTALL AND REMOVE - Leave your screwdrivers in the toolbox, and detaches in under 2 seconds with NO tools required. Can be mounted almost anywhere. WATERPROOF AND SHOCK RESISTANT:IPX4 Waterproof grade Suitable for the professional or casual bicycle rider.