Wearing the headset

  1. Lay the headset units on their sides and remove them from the charging case.

    The headset turns on automatically.

  2. Put the headset units into your ears.

    Put the headset unit with the (left) mark into your left ear and the headset unit with the (right) mark into your right ear. The left headset unit has a tactile dot.

    If you feel it is difficult to put the earbud tips into your ears, squeeze the earbud tips lightly before wearing the headset.

    Illustration indicating the location of the tactile dot (A) on the left headset unit

    A: Tactile dot

    Be careful not to come in contact with the touch sensor when you put the headset units into your ears.

    Illustration indicating the locations of the touch sensors (B) on the left and right headset units

    B: Touch sensors (left, right)

  3. Adjust the fit of the headset units to your ears.

    Hold and rotate the headset unit with your thumb, index, and middle finger to adjust the headset to fit your ear.

    After putting the headset unit into your ear, hold the side of the headset unit with your fingers and slowly push the earbud tip into your ear canal.


    • If you touch the touch sensor, the headset may operate.

    Check if there is a gap between the earbud tip and your ear canal because the earbud tip is not inserted all the way into your ear or the earbud tip is the wrong size.

  4. Use the video function on your smartphone to check the fit on your ears.

    The noise canceling effects may not be achieved depending on how the headset units are worn.

    If you use the video function of your smartphone or other devices to record and check how the headset units are worn in your ears, you can understand its feel when worn and get closer to discover the correct way to wear the headset.

  5. Wait for about 10 seconds for the earbud tip shape to stabilize.

    If you feel your ears are not sealed, the noise canceling function is not sufficient or the low frequency sound performance is not sufficient, try larger size earbud tips.

    If the headset units come off while you are wearing them, try smaller size earbud tips.

For the proper sound quality, noise canceling function, and call sound quality to be effective

If the size of the earbud tips does not match the size of your ear canals or the headset is not worn properly in your ears, tap operations or Speak-to-Chat speech detection may not work correctly, or you may not obtain the correct sound qualities, noise canceling effects, or call performance.

If any of this is the case, try the following.

  • Change the earbud tips to ones that fit more snugly in your ears. When changing the earbud tips, try the earbud tip sizes in order from the larger ones to the smaller ones. The most suitable size of the earbud tips for left and right ears may be different.
  • The “Sony | Headphones Connect” app will help you to determine which earbud tips suit you best to achieve the optimal noise canceling effect, sound quality, etc.
    Perform [Determines Optimal Earbud Tips] and confirm that [Earbud tips are air-tight.] is displayed.
    If the display is a display other than the above, push the earbud tip slowly into your ear canal or replace it with another earpiece and measure again.
  • See step 3 and check that you are wearing the headset properly in your ears. Wear the headset so that the earbud tip is comfortably situated as deep in the ear canal as possible.


  • The function that determines the optimal earbud tips for you measures the air-tightness of the earbud tips and determines whether or not the headset units are being worn in your ears correctly. Select a size that fits comfortably.

When attaching and removing the headset

In the factory settings, the built-in IR sensors detect when the headset is inserted in or removed from your ears to pause or resume music playback and control the touch sensors and voice guidance.

When the headset is worn

  • You can use the touch sensors to play music, make and receive calls, etc.
  • You will hear a notification or voice guidance corresponding to the operation and status.

When the headset is removed

  • When you listen to music while wearing both headset units in your ears, the headset will pause music playback if one or both headset units are removed. When the headset is worn again, the headset resumes music playback.
  • When the headset units are not worn for about 15 minutes after being removed from the charging case, the headset turns off automatically to save battery. Turn the headset on by tapping the touch sensor or by putting the headset units into your ears.
  • As a means of preventing the headset from reacting incorrectly, it is not possible to play back music, make or receive calls, or perform other operations by tapping the touch sensors of the headset units when they are removed from your ears.


  • You can also play music, make and receive calls, etc. when only one headset unit is worn in your ear.
  • You can use the “Sony | Headphones Connect” app to change the settings that automatically pause and resume the music playback, or automatically turn off the headset.