Features:100% brand new and high quality.Bluetooth V4.1Portable lightweight and sweatproof designBuilt-in microphoneBuilt-in rechargeable Li-ion batteryMultipoint pairing (connect 2 bluetooth device)Support voice promptSupport connect 2 bluetooth device in the same time.Support voice answer、 Say "YES" answer、 Say "NO" reject.Support listen musicClear bass resonance、 CVC wind noise reduction、 and superior sound isolationSpecifications:Colors: Black、 White、 Blue、 Red、 OrangeEarpiece size: 55*42mmBluetooth: V4.1Package Include:1 x Headset1 x USB Charger Cable