Product specifications:
Bluetooth Version: V4.2
Sound Mode: Stereo
Charging time: 3 Hours
Standby time:480 Hours
Talk/Playing time:48 hours
Operation distance:10 Meters
Connect 2 phones: Yes
Power Source: Built in Rechargeable Battery
Functions:
Volume up
Volume down
Playback/Previous
Lowe Battery Warning
Answer/End/Reject Call
Transfer call voice
Replay the phone
Mute
Default setting
Turn off voice notifications