Suggested Retail:$348. Sony WH-1000XM4 Wireless Industry Leading Noise Canceling Overhead Headphones with Mic for Phone-Call and Alexa Voice Control, Silver. Sony’s intelligent industry-leading noise canceling headphones with premium sound elevate your listening experience with the ability to personalize and control everything you hear. Get up to 30 hours of battery life with quick charging capabilities, enjoy an enhanced Smart Listening feature set, and carry conversations hands-free with speak-to-chat.. 7 DAY FULL REFUND GUARANTEE ON THIS ITEM IF ANY ISSUE IS FOUND THAT WAS NOT DESCRIBED/PICTURED. 7 DAY STORAGE IS ALSO AVAILABLE. SEE NOTES TO BIDDER, IN AUCTION DETAILS, AT THE TOP OF PAGE 1 FOR MORE INFO.