Compare prices for Sony Sony WFLS900N/B Headphones & Earbuds

Overall sound quality receives many positive remarks, with users describing it as clear, immersive, and comparable to Sony's higher-end XM4 over-ear headphones. However, a minority of users report muffled or mediocre sound, and some note a lack of deep bass. The mixed feedback reflects an above-average but not flawless audio experience.

Comfort and fit are widely praised across all reviews. Users with small ears, narrow ear canals, or those who struggle with earbud fit find these exceptionally comfortable and secure. Many mention they stay put during exercise and can be worn all day without discomfort. The multiple ear tip sizes contribute to the excellent fit.

Battery life is the most heavily criticized aspect. Numerous users report rapid degradation after a few months, with the right earbud dying in 15–30 minutes or failing to charge entirely. Even within a year, many experience the need to charge 2–3 times daily. This is a widespread and severe issue.

Active noise cancellation is generally effective, with some users comparing it favorably to Sony’s premium models. However, several complaints mention a constant buzzing sound when ANC is enabled, and the ambient sound mode does not work well for some. Overall, ANC quality is decent but not flawless.

Build quality receives both praise and strong criticism. The design is praised for being lightweight, sleek, and compact. However, multiple users report physical disintegration (sensor lens falling off), charging failures, intermittent disconnections, and unreliable touch controls. These issues significantly lower the overall durability score.