A promo video for the upcoming Sony WH-1000XM4 wireless noise-cancelling headphones has been leaked online, and it reveals quite a few details about the successor to the well-received WH-1000XM3 headphones. Users will be treated to features such as wear detection, Speak-to-Chat mode, DSEE Extreme, and location-based favorite presets.

Sony is holding an audio-related event on August 6 and it is widely believed that this is when the much-heralded Sony WH-1000XM4 ANC headphones will be officially launched. Various leaks concerning the headphones have already revealed some details, including an expectedly hefty price tag. But with the WH-1000XM4 headphones you do seem to be getting what you pay for, as a leaked promo video has unveiled many of the features the device will boast of (see below to watch the clip).
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