If the headset is not used for a long time, the indicator (red) may not light up when you connect the micro-USB cable to charge the headset. For details on how to properly set the charging case on the charging pad, refer to the charging pad manual.

Tips on charging headphones (WF-1000XM4) | Sony UK

To view the purposes they believe they have legitimate interest for, or to object to this data processing use the vendor list link below. The material or thickness of the cover, or foreign objects caught between the charging case and the cover, can cause charging not to perform properly and/or result in fires, burns, or injuries. Enjoy a thrilling Dolby Atmos® experience and 360 Spatial Sound that adapts to your ears with BRAVIA XR and these headphones using wireless transmitter WLA-NS7.

Powerful 40mm drivers, with Liquid Crystal Polymer (LCP) diaphragms, make the headphones perfect for handling heavy beats and can reproduce a full range of frequencies up to 40kHz.

Accessories | Headphones | Sony UK

Proximity sensor and two acceleration sensors in your headphones can detect whether you’re wearing them or not, then adapt playback accordingly to help save battery power.

As such, it is a wise move to get a replacement Sony Charger Cable, or you may try a completely connected USB Cable. Enjoy entertainment, connect with friends, get information, listen to music and notifications, set reminders, and more. Sony Headphones are in high demand for its unique features, and as it produces the most excellent audio experience.