brand:neutral;Article No:07S;Transmission range:10m;function:Battery display; call function; music support;Processing customization:yes;Bluetooth protocol:5.0;Vocal tract:stereo;How to use:Headworn;Single or double ears:Bilateral stereo;Suitable for gift giving occasions:Wedding; birthday; festival; relocation; trade fair; advertising promotion; employee welfare; anniversary celebration; business gifts; opening ceremony; award commemoration; public relations planning;colour:Black; white; red; dark blue; light green;Mold Type:Private model;chip type:Jerry ; Shenzhen Huayitai Technology Co.; Ltd. specializes in the production of Bluetooth earphones and private models of Bluetooth speakers. The factory has a building area of 20000 square meters and a 6-storey factory building covering 3600 square meters Our factory has a complete quality management system of R&amp;D equipment (product 3D design; mold development; injection molding machine; finished product workshop). Integrity; strength and product quality have been recognized by the industry. 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