The MonopriceTM BT-300ANC Over Ear Active Noise Cancelling Headphones are great everyday wireless headphones for use at home; at work; or while traveling. Featuring a foldable; extremely portable design; 40mm drivers; and active noise cancelling technology; the BT-300ANC utilizes Bluetooth® wireless technology to connect with your mobile device at distances up to 32 feet away. Experience exceptional sound quality; comfort; and design with the Monoprice BT-300 Over Ear Active Noise Cancelling Headphones. Support Files: User’s Manual (Jul 20; 2018) MonopriceTM and all Monoprice logos are trademarks of Monoprice Inc. The Bluetooth® word mark and logos are registered trademarks of Bluetooth SIG; Inc. Qualcomm® is a trademark of Qualcomm Incorporated; registered in the United States and other countries. cVcTM is a trademark of Qualcomm Incorporated. Updated May 4; 2020