Charge only the earphones

You can charge the earphones with the charging cradle if it is sufficiently charged, even when there is no power supply nearby.
1.
Put the earphones into the charging cradle.
The earphone status indicator LED quickly flashes red (twice). (Put the earphones into the charging cradle again if the LED does not flash.)
The earphone status indicator LED lights up (red), and charging starts.
Charging is complete when the earphone status indicator LED turns off.
Charging time (the time from empty to full charge)
Charging only the earphones
About 2.0 hours
Note:
If the charging cradle is fully charged, you can charge earphones with no charge about two times.