Sony WF-1000XM4 rumor suggests better battery life and HD audio upscaling


Watch out AirPods, the Sony WF-1000XM4 are a long-awaited successor to one of the best wireless earbuds ever – and they could be coming with two major upgrades. 

A prototype of an upcoming pair of wireless noise-cancelling earphones from Sony with the model number YY2948 has been certified by the FCC and Bluetooth SIG and should the codename really match up with the Sony WF-1000XM4, we could be in store for a number of big upgrades.



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