The IFECCO Swimming Headphones Underwater are IP68 waterproof bone conduction headphones designed for specific uses such as swimming, running, and cycling. With a modern style and built-in music storage, these headphones offer a convenient and stylish option for underwater music enjoyment. The headphones feature Bluetooth wireless communication technology, a 10.0 Bluetooth range, and a volume control for easy listening on-the-go. Made of Acrylonitrile Butadiene Styrene (ABS), these headphones are lightweight at 0.51 pounds and have an open ear design for comfort and functionality during various activities.