Bluetooth version: V5.0+DER 

Transmission distance: 10m(open distance)

Frequency range: 20Hz-20kHz 

Battery: 45mAh for earphone, 300mAh for charging box 

Speaker size: 10mm

Speaker impedence: 32Ω 

Talking time: about 4 hours 

Play music: about 3-4 hours 

Standby time: about 50 hours 

Charging time: ≤ 2 hours 

Color: BLACK/WHITE/GOLD/ROSE GOLD 

Function:

Volume control, change the song, answer the call, reject calls, hang up the call, play music by Bluetooth, redail the call, voice prompt and so on.