[Smart Touch Control] Specific touch control function makes it more convenient, tap once to play/pause music and answer calls, double tap to skip forward/backward, hold to adjust the volume. You can easily control it without operating the phone. [TWS & BLUETOOTH 5. 0] Adopt the advanced Bluetooth 5. 0 technology. Support HSP, HFP, A2DP, AVRCP, which greatly improve the transmission speed and providing you with a low-latency listening experience. [One step pairing] Pick up 2 headsets from charging case and they will connect each other automatically, then only one step easily enter mobile phone Bluetooth setting to pair the earbuds