1.Bluetooth Version:V5.4,
2.chip: JL6973D4,
3.Bluetooth Protocol: HFP、A2DP、HID、AVRCP、AVCTP、AVDTP,
4.Transmission Distance:10m,
5.Call Duration:3.7hours,
6.Music Playtime:4.5 hours,
7.Standby time:40 hours,
8.Battery Capacity:25mah/ 300Mah,
9.Charging time:1.3 hours,
10.Speaker:Φ13, composite membrane,
11.Speaker Sensitivity: -86dBm,
12.Frequency Response:100Hz-20KHz,