The open music experience is the main function of the Ambie earcuffs. The headphone lets you listen to music and sound, but also hear the world around you. Crowded environments are no longer a worry. Wherever you are, enjoy the same high-quality sound. It's also comfortable and enjoyable enough to be worn all day long. Continuous Play Time: 6 hours Charging case is non-waterproo USB Type-C cable, instruction manual is inside.