STRONG STABLE BLUETOOTH CONNECTION - Using Bluetooth 4.2 ensures a strong wireless connection AAC AUDIO CODEC SUPPORTED - Listen to high quality audio with AAC audio codec SWEAT AND SPLASH PROOF - Rated as IPX4, the earphones are sweat resistant for intense workouts COMFORT SECURE FIT - Have your earphones stay in your ears with the addition of the added ear hooks and swappable eartips ONE YEAR WARRANTY - Extremely durable and flexible, 12-month warranty in USA and Canada