DEEP BASE WITH NOISE ISOLATION - Listen to your favorite songs and enjoy a pleasurable deep bass, outside noises are blocked by design ERGONOMICS FOR GYM USE - Earbuds that stay in your ears while working out BLUETOOTH v4.1 - Wireless range up to 10 meters/32.8-feet CONNECT TO TWO DEVICES - Connect to two different Bluetooth devices at the same time. Take calls or choose playlists from either device. 1-YEAR WARRANTY - Supported with our 1-year warranty guarantee within both US and Canada