Wireless technology with easy to use track controls, this is the best way to enjoy your exercise with your musicKitSound Race earphones have 10 mm drivers to create rich and powerful soundPlay time of up to 5 hours so you can pick up the pace again and again.Created with comfort and stability in mind, so choose your earbud size and slide the ear hook behind your ear for maximum comfortFill the included 1 litre water bottle to help keep your body hydrated during those long workout sessions