Multipoint techonology, pairing with TWO Bluetooth devices simultaneously.Sleek, ultra-lightweight design ensures that the devise remains secure and comfortable, even when worn for long durations.Get rid of the wires when exercising! This Earphone is Bluetooth V4.0 + EDR, fully backward compatible with Most Bluetooth Version Device (V4.0, V3.0 + EDR, V2.1 + EDR,V2.0 + EDR, V1.2, V1.0 etc.). Just make sure your phone (or other Device) is Bluetooth Device <li>Bluetooth compliance: Bluetooth V4.0 </li><li>Transmission Power: Class 2 </li><li>Operating range: Up to 33 feet (10 meters) </li><liTalk time: Up to 3 hours (subject to phone) </li><li>Stand-by time: Up to 70 hours (subject to phone).Weight: 6.2g </li><p> <b><b><img src="https://contestimg.wish.com/api/webimage/594a80aaef8d543cdf17a833-large.jpg></b></b></p>