Sony WF-1000XM4 Repair

Released in June 2021, the Sony WF-1000XM4 earbuds are the follow up to the popular high-end WF-1000XM3 earbuds. They improve on almost every axis, offering advanced noise cancelling, better battery life, and water resistance.

The Sony WF-1000XM4 earbuds range between $129–$280 USD.

The Sony WF-1000XM4 uses its model number in its name: WF-1000XM4. The model number should be printed on the inside of the charging case, or you can check the original packaging. Otherwise, you can identify these earbuds by their horizontally-oriented charging case with the Sony logo printed on the top of the lid. The earbuds themselves are teacup-shaped and have a small metal nub where they charge.

The Sony WF-1000XM4 earbuds come in two colors: Black and Platinum Silver

• Weight:
  • Each earbud = 7.3 g
  • Charging Case = 41 g
  • IPx4 waterproofing
• Connectivity:
  • Bluetooth® 5.0
  • Line of sight = ~30 ft (10 m)
• Audio (Each Earbud):
  • 6 mm driver
  • Togglable noise cancelling
  • On-ear volume controls
  • DSEE Extreme Digital music upscaling
• Battery:
  • Battery charge time = ~1.5 hours
  • Battery life with continuous communication time = max 5.5 hour (NC ON) / max 6 hours (NC OFF)
  • Battery life with continuous music playback = max 8 hours (NC ON) / max 12 hours (NC OFF)
  • USB-C® charging port is on the charging case

• Official Sony’s page for the WF-1000XM4 earbuds
• The walkman blog: Reverse engineering of the V1 Processor
• Toms Guide: review of the Sony WF-1000XM4