Features: [Wireless 5.0 Compatibility] BT5.0 connection can realize faster transfer speed, longer transmission distance, lower power consumption, more stable transmission of data, strong compatibility, suitable for almost all BT-enabled devices. [Auto pairing] Pick up and automatically pair, start the device, pair the phone, and only need to turn on the BT for one second to connect. [Long-term use] with a large capacity charging compartment (500mah). Charging takes about an hour, working hours are about 5 hours, and standby time is about 480 hours. [Bass effect] 6D surround sound effect high and medium bass upgrade, high school bass is brighter, male middle voice is clearer, lower bass. [Bilateral call] Clear voice bilateral call, bilateral call, two headsets can be used simultaneously or separately.