Sony WH-1000XM4 Headphones Leak Suggests Possibility Of Battery Boost

The WH-1000XM3 is one of Sony’s finest pair of headphones – or even the best of the lot – for good reasons: exceptional noise-cancelling capabilities, top-notch comfort, and first-rate battery life. As the question of its next iteration release looms, surfacing leaks have given an idea on what to expect from its WH-1000XM4 successor, including prolonged battery life.

First spotted by user Everton Favretto on Twitter in photos posted by Anatel (or the Brazilian Telecommunications Agency), the headphones appear to be very similar to the current M3s, with an identical sleek black design, and leatherette earcups. An accompanying user manual reveals further glimpses of notable improvements, such as:

  • Bluetooth v5 (updated from v4.2)
  • 2W of rated power consumption (down to 8W)
  • 40 hours of operation with headphone cable connection and noise cancellation on max (up from 36 hours)
  • A new “speak to chat” feature, allowing for easier access to Google Assistant, Siri, and Alexa

Judging from the placeholder labels, the document is very evidently still in the drafting phase, so the specs should be taken with a pinch of salt. In any case, the increased battery life and Bluetooth 5 upgrade should prove to be rather attractive, especially if Sony decides to keep the M4 at the current price tag of US$349.99.

No release date has been announced for the M4 at the moment, but the development process seems to be off to a good start – if the leak is anything to go by.

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