Easy to Install and Durable - Take Just Seconds to Mount Without the Need for Tools, Wires, Screws, or Extra Batteries and Accessories. In Addition to Fitting All Standard Bicycles, Lights Are Also Suitable for Use on Scooters, Strollers, and Wheelchairs. They Are Easily Removable for Storing and Charging. Rated at IPX5 water resistant, these lights have been built to withstand adverse weather conditions. Constructed with years of use in mind.