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Bulk Bluetooth Headphones & Headsets Active Noise Cancelling Wireless Bluetooth over ear headphones built-in ANC technology T1 chip can effectively reduce low frequency background noise while delivering clear sound quality. Bluetooth 5.1 chip-set provides a more stable connection and crisp high-definition immersive experience. One button to turn on active noise cancellation function on over ear headphone and a more pure music world comes to you. Active Noise Cancellation function can be optional. Superior Sound Quality HD chip and 40mm stereo drivers bring high quality HD effect and powerful bass sound. True stereo mode delivers an immersive surround-sound experience and steady stereo audio music. Longer Playing Time Built in low consumption chip-set and large capacity lithium battery with protection board provides safety and supports longer playing time, stream music 40 hours and standby time over 1000hours. Comfortable Fit and Adjustable Design Super soft protein ear pads provides gentle feel and perfect fit for ears. The high-quality metallic slider comes with telescopic and stretchable design provides a fully personalized and comfortable fit with the swiveling ear cups. This Bluetooth earphones with active noise cancellation provides comfortable wear for all-day use. Foldable Headband Selected high-performance craft materials brings stylish and fashionable appearance and luxury experience. A Bluetooth headset over ear, its headband is foldable and easily transportable on the go. Wide Compatibility Bluetooth earphones with active noise cancellation is widely compatible with all smartphones, tables, laptops and other Bluetooth devices. Black,White,Red Type: Active Noise Cancellation Bluetooth EarphonesBulk Bluetooth Headphones & Headsets website:http://www.deedget.com/wireless-bluetooth-earphone/bluetooth-headphones-headsets/