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 comes with different pairs/ sizes of sport tips (in sizes S/M/L) that provide a comfortable and secure fit right earbud to allow you to use them during calls when connected to a smartphone. Up to 5 hours of play time with each charge and an additional 10 hours with the included charging case.