Specification：
Product name: SE-9
Bluetooth version: Buetooth V5 0
Bluetooth protocol: HSP/HFP/A2DP/ AVRCP
Charging time: About 2 hours
Power input: DC5V
Talk time: 5 hours
Listening time: 6 hours
Standby time: About 150 hours
Frequency range: 20-20kHz
Charging box capacity: 3.7/400mAh
Sensitivity: 110 soil 3DB
Battery capacity: 3.7V/ 60MAH
