Battery Display Charging Case: The Bluetooth headset was built in 55mAh battery, it can be fully charged in 1.5H for continuously 12H talking. With the charging case, it displays the remaining battery of the charging case..
Bluetooth V 5.1: Adopts the latest version of Bluetooth V 5.1, compared with old version, it greatly reduce the chance of cutting in&out and provides more stable connection for up to 33 feet away. Also, it can be connected with two devices simultaneously.