MID A.N.C. Bluetooth aptx Active Noise Canceling Headphones provide the highest quality wireless audio while canceling out the noise around you, allowing you to fully enjoy your favorite music. Guaranteed more than 20 hours of wireless audio playback when Active Noise Cancellation (ANC) is enabled, or more than 30 hours without using anc. The customizable 40mm dynamic drivers deliver stable sound reproduction that perfectly combines clarity and clarity with just the right amount of bass—the perfect combination to meet the needs of the most demanding audiophiles.