How to wear the headphones properly and select most suitable earbud tips

If you feel the earbud is difficult to wear, gently pull up on the top of your ears, put the earbud tips in your ear canal, and twist the headphones into place. Doing this makes it easy to make sure the headphones are properly and firmly in the ear canal.

When using the Noise Isolation Earbud Tips with the headphones, the tips will alter their shape to fit in your ears. Wait for about 10 seconds for the earbud tip shape to stabilize, then check whether they fit in your ears and if the effect of the noise canceling function is sufficient. If you feel the headphone earbud tips do not fit with your ears as you would like, or the effect of the noise canceling function is not sufficient, remove and reinsert the headphones, making sure the earbud tips fit snugly in your ears.
Note: Depending on the model, Noise Isolation Earbud Tips are not available.

You can measure the air-tightness of the earbud tips using the Determines Optimal Earbud Tips function of the Sony | Sound Connect (formerly Sony | Headphones Connect) app.
Note: The images below are examples using the WF-1000XM4.

1. Start the Sony | Sound Connect app, then connect with the smartphone via Bluetooth.
2. In the My Device tab, select Device settings.
3. Select the System tab, then select Determines Optimal Earbud Tips.
   Note: If a message appears, touch OK.
4. Select TEST THE WEARING CONDITION, then wear the headphones by following the instructions on the screen.
5. Select START, then wait for the test to complete.
   Note: Perform measurements at a quiet location and make sure not to move while measuring.
6. Check the results of the measurement
   Note: If the headphones are correctly worn on your ears, and the earbud tips fit in your ears, the message Earbud tips are air-tight is displayed. If any other message is displayed, the earbud may be too small so there is a gap between the earbud and your ear, or the earbud may be too large. Push the earbud gently into your ear so that it fits well, or try other size earbud tips, then measure again.
    

Different sizes of earbud tips are supplied to allow you to achieve the maximum effects of the headphones. Ear canals vary in size from person to person, and can also vary in size from the left to the right sides. Use the Determines Optimal Earbud Tips function of the Sony | Sound Connect app to check the size of the earbud tips that best fit your ears.

Note: The Determines Optimal Earbud Tips function measures how snugly the earbud tips fit in your ears to achieve the optimal noise cancellation effect and sound quality. Before using the headphones, select a size that feels comfortable when worn.

1. Start the Sony | Sound Connect app, then connect with the smartphone via Bluetooth.
2. In the My Device tab, select Device settings.
3. Select the System tab, then select Determines Optimal Earbud Tips.
   Note: If a message appears, touch OK.
4. Select COMPARE ALL SIZES.
5. Select 2 or more sizes that fit your ears among the size options, then select NEXT.
   
6. Follow the instructions on the screen, then attach the first size earbud tips and wear them in your ear.
   Note: If you are using the Noise Isolation Earbud Tips, refer to the Notes on using the Noise Isolation Earbud Tips article on how to remove or attach the earbud tips
7. Select Start.
   Note: Perform these measurements in a quiet location and make sure not to move while measuring.
8. After the measurement is completed, repeat the process for each of the different size earbud tips.
   Note: Measure all the earbud tip sizes checked in step 4. Repeat the measurement in steps 5 and 6.
9. When all measurements are complete, check the measurement results, and the earbud tip size to best fit your ears will be displayed.
   Hint: If you feel the earbud does not fit well, push the earbud gently into your ear so that it fits well, or try other size earbud tips.