Bluetooth version: V5.0
Communication distance: 10 meters
Standby time: 30 days
Talk time: 25 hours
Listening time: 18 hours
Battery capacity: 500mAh
Charging time: about 2 hours
Frequency response range: 20Hz-20KHz
Applicable models: mobile devices with Bluetooth
Basic functions: Bluetooth/wired/TF card/FM/hands-free calling

Listening mode
Short press function key: play or pause
Next song: click volume + key
Previous: click volume key
Add volume: press volume + key for 2 seconds
Volume reduction: press volume key for 2 seconds
Switch mode: long press M key for 2 seconds
Call mode
Short press function key: answer or end
Long press function key: Reject