Sony h.ear on 3 Wireless NC Help Manual page 5

The Bluetooth wireless communication range is short, or the sound skips.
The headset does not operate properly.
Cannot hear a person on a call.
Low voice from callers
Resetting or initializing the headset
Resetting the headset
Initializing the headset to restore factory settings
5-007-092-11(3) Copyright 2019 Sony Corporation
5