What ear tip sizes are included with the JBL Tune Flex, and why does size matter?
The JBL Tune Flex includes XS open ear tips and S, M, and L sealing ear tips. You should try different sizes for optimal sealing and audio performance. Ear tip Sound Settings are also available in the JBL Headphones App to further tune sound based on which ear tips you are using. (Pages 2, 4)
From the official Jbl Tune Flex Earbuds manual, page 4
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