These Kitsound Race 15 Sport Wireless Earphones feature Bluetooth technology enabling you to enjoy your music whatever you are doing!The RACE 15 come with adjustable ear-hooks and a flat anti-tangle cable for extra comfort and control when you exercise. These earphones have 5 hours of playtime and IPX4 sweat resistance for longer sessions in the gym or whilst running.. 2 hour charge time. Easy to use track controls with call handling. Adjustable ear-hooks. Anti-tangle cable. IPX4 sweat resistance. 5 hours playtime. Approximate dimensions (mm) H 635 W 60 D 26