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• Improved Active Noie Cancelling (ANC) Technology. E9 can work better and significantly cancel noise for travel, work and anywhere in between. Quells airplane cabin noise, city traffic or a busy office, help you focus on what you want to hear. Great for cancelling noise during long trips on a plane or in places with city traffic.
• Superior Sound Quality. AptX, aptX HD, aptX Low Latency, and AAC audio codecs. 
• CVC HD Calls and Bluetooth 5.0. The high-quality built-in microphones provides CVC HD calls, the business class communications even in windy or noisy environments, Which is convenient for you to conmunicate with others. Bluetooth 5.0 promises quick and stable connection with your Bluetooth enabled devices. Bluetooth transmission distance: >15m.
• The Upgraded Soft Ear Cushions and Premium Material. More durability and comfort, Enjoy high-quality, Long-listen comfort. 
• 30 Hours Playtime. A built-in 800mAh battery won't allow your headphones power off, 30 hours playtime and 60 months standby time.