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Amazon.com: Audio-Technica ATHM50XBT Wireless Bluetooth Over-Ear Headphones, Black : Musical Instruments
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Audio-Technica ATH-M50xBTGM Wireless Bluetooth Over-Ear Headphones with 45mm Neodymium magnet, Built in Microphone, Volume Controls, and 40 hour battery, Gunmetal - Newegg.com
Audio-Technica USA - What's so great about the ATH-M50xBT2? These headphones have a battery life of up to 50 hours of continuous use on a full charge, with up to 3 hours
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