Charging Case Battery
Tools
These are some common tools used to work on this device. You might not need every tool for every procedure.
Background and Identification
The Sony WF-1000XM4 is a pair of wireless earbuds made for audio playback and noise cancelation. The Sony WF-1000XM4 earbuds are the successors to the popular Sony WF-1000XM3 earbuds.
The earbuds come within their charging case and are available in two colors, black or white.
The top plastic surface of both earbuds is touch-sensitive and allows controlling noise cancelation related functionalities and audio playback.
Known issues
This device has suffered some issues while in production :
- Some users reported hearing crackling noise while noise cancelation is active
- There have been reports of some earbud explosion with this device.
No recall was officially made by Sony concerning the battery explosions at the moment of writing this page (06/2023).
Technical Specs
Earbuds
- Battery nominal voltage: 3.85v
- Battery capacity: 75 mAh/0,29 Wh
- Battery lifetime: ~8h
- Battery endurance: Up to 500 cycles
- Battery technology: Lithium-ion
- Noise canceling efficiency: from -13.17 dB to -34.86 dB (depending of the sound frequencies to cancel)
- Compatible Bluetooth codecs: SBC, AAC, LDAC
- Transducer diameter: 6 mm
- Frequency response: from 20 Hz to 40 KHz
- Processor: V1
Charging Case
- Battery nominal voltage: 3.7v
- Battery capacity: 500mAh/1.85Wh
- Battery technology: Lithium polymer
- Battery endurance: Up to 500 cycles
- Wireless charging: Yes
- USB-C charging: Yes