TRULY wireless Sport headphones for total freedom of movement Packed full of technology that makes music sound clear and powerful Earbuds are sweat and weather resistant (with an Ipx4 rating) and come with 3 different pairs of stay hear+ Sport tips (in sizes S/M/L) that provide a comfortable and secure fit Up to 5 hours of play time with each charge and an additional 10 hours with the included charging case Track lost earbuds with the Bose connect App's “find My buds” feature