1.Bluetooth version：5.2
2.Speaker diameter：13mm
3.Charging bin capacity：300mA
4.Earphone battery capacity：30mA
5.Music time: 4-5 hours 6.Distance：10m
7.Frequency：20Hz-20KHz 8.Drive unit: ∅ 13mm
9.Audio decoding: AAC, SBC
10.Headset charging time: about 1.5 hour
