Bluetooth Chip:JL6955F Bluetooth Version:V5.3 Drive Unit:40mm Transmission Distance:≥10m Standy Time:About 80H Battery Capacity:200mAh Charging Time:About 2-3H Music Time:About 6-8H Call Time:About 6-8H Frequence Response: 20HZ-20KHZ Sensitivity: 116±3db