Sony WF-SP900 Help Manual page 33

Hint
If the player does not feel comfortable, replace the earbuds or the arc supporters.
To use the player for swimming, change the earbuds to Swimming Earbuds.
Note
Fit the player into your ears while the earbuds and your ears are still dry.
To use the player for swimming, fit the player into your ears securely. If there is a gap between your ears and the player, water will
get into your ears.
Instructional video
The following movie shows you how to place the player on your ears.
http://rd1.sony.net/help/mdr/mov0003/en/
The contents of the Help Guide may be subject to change without notice due to updates to the product's specifications.
Related Topic
Differences between the standard-type earbuds and Swimming Earbuds
Switching the earbuds
Switching the earbuds to Swimming Earbuds
Switching the arc supporters
Detaching the player
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