The Sony WH-1000XM4 Wireless are the successor to the Sony WH-1000XM3 Wireless. This generation has some improvements, including a longer continuous battery life
Sony WH-1000XM4 Review 2020 - Upgraded Microphone & Better Ergonomics
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Sony WH-1000XM4 Review
Sony WH-1000XM4 Noise Cancelling Headphones - Sony XM4 REVIEW - Pro Fit Hearing
Sony WH-1000XM4 review
PRODUCT OVERVIEW Sonys WH-1000XM2 premium noise-canceling headphones let you completely immerse yourself in your music anytime, anywhere. Bluetooth and NFC technology offer wireless freedom, while industry-leading noise cancellation blocks out background noise.
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Sony WH-1000XM4 Wireless Noise Canceling Headphones Review
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Sony WH-1000XM4 review: Minor but meaningful upgrade with improved utility