Correctly distinguish right and left headphones, "L" for left, "R" for right.
Straight headphones inserted into the ear, correct wear, comfortable wear, excellent sound insulation performance.
Fix the headset wire behind the ear.
Press and hold the headset panel to adjust the seal.
Adjust earphone wire and fix earphones.
Plug the headset plugs into the play-back device and use it to adjust the volume before the headset is plugged into the device.