Detailsbrand - neutral;Article No - J56;Transmission range - 10m;function - Battery display; call function; voice control; music support;Processing customization - yes;Bluetooth protocol - 5.0;Vocal tract - stereo;How to use - Earphone ;Single or double ears - Bilateral stereo;Suitable for gift giving occasions - Wedding; birthday; festival; relocation; advertising promotion; business gifts; awards and commemoration;colour - Black; white;Mold Type - Private model;chip type - Jerry ;Endurance - 4