15.5 ( l ) x 13 ( w ) x 5 ( h ) ABS • supports playback from smartphones, tablets or most other Bluetooth compatible audio devices • built-in mic supports call pick-up • internal, rechargeable lithium polymer battery • recharges via USB cable ( included ) BLUETOOTH V2.1 EDR WIRELESS 10m VISIBLE DISTANCE Whether you’re at the gym or hitting the tracks, our Ultra Bluetooth Earbuds will amplify your workout experience