Bluetooth version: V5.4
Chip: AB5656C3
Bluetooth protocol:HFP、A2DP、HID 、AVRCP、AVCTP、AVDTP
Transmission distance: 10M
Talk time: 4H
Music playback time: 4H
Standby time: 50H
Battery capacity: 25mah / 300mAh
Charging time: 1.5H
Speaker: Φ13
Receiver sensitivity: -90dBm
Frequency response: 50Hz-20Khz