Wireless earbuds
Sony's entry-level earbuds: small sealed buds with long battery life per charge, but no noise cancelling.
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Small earbuds
At launch they were the smallest sealed earbuds in Sony's range, shaped so smaller ears get a stable fit. Reviewers found the case unusually compact.
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Long battery per charge
Rated up to 11 hours per charge, and reviewers measured 10 to 14 hours. The small case adds only about one more full charge, so total runtime trails many rivals.
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Mellow sound
Reviewers found the tuning mellow, with restrained bass and subdued treble. The app's EQ can adjust both.