Grade Noise Cancellation Technology: The active noise cancellation can detect and cancel out a wider range of low and mid frequency noises such as cars and airplane engines Bluetooth5 and CVC6.0 Noise Reducing Mic for Online Class, Home Office: Built in advanced Bluetooth Chip ensure fast connection and pairs microphones with a noise reduction algorithm to accurately pick up and enhance your voice while suppressing other noises for clearer calls Active Noise Cancelling technology. Significant noise reduction for travel, work and anywhere in between. Advanced active noise reduction technology quells airplane cabin noise, city traffic or a busy office, makes you focus on what you want to hear,enjoy your music, movies and videos. The noise cancellation function can work well both in wire and wireless mode. The professional protein earpad and 90° swiveling earcups. More durability and comfort, Enjoy high-quality, Long-listen comfort. Skin texture, lightweight comfortable around-ear fit you can wear all day long. Gentle Reminder: please take off the headphone every 2-3 hrs to get your ears relax, in order to get better hearing enjoyment, and keep the head comfortable. 8 hours playtime per charge at Bluetooth mode. , you can enjoy your world without noise for 8 hours' long time. Don't need to worry the power shortage problem on the long travel. 18-month warranty and quick response & friendly customer service. Dedicated customer service team, provide you with quick response and friendly customer service, which will always serve for you and certainly satisfy you.