Hybrid Active Noise Cancellation: Perfect for working at home, taking online classes, commute, or traveling. Escape the noise of the city with industry-leading noise cancellation. It analyses personal characteristics like head size, glasses, and hair, then optimizes sound to you. Feed-forward and feedback ANC to Reduce Ambient noises by up to 90% Bluetooth 5.0 & cVc 8.0 Mic: Upgrade Bluetooth 5.0 technology promises ultra-fast and stable connection. CVC 8. 0 noise-canceling microphone for hands-free calls means you can be heard clearly on the phone. Hi-Fi Audio Sound & Strong Bass: Truly authentic sound. Dual 40mm large-aperture drivers to produce powerful sound and rich music with lesser audio delay. Deep, accurate bass response.Double press the Volume down button to change the band of EQ for your an amplified listening experience Hybrid Active Noise Cancelling Headphones, VANKYO C751 Over-Ear Wireless Bluetooth Headphones with CVC 8.0 Mic, Deep Bass, Hi-Fi Sound, 30H Playtime Headset for Adults, TV, Online Class, Home Office