UGREEN HiTune Max 5 Noise Cancelling Headphones Wireless Bluetooth 5.0 Headphone Over-Ear, 90 Hours Playtime Fast Charging Headsets, HiFi Stereo Hi-Res Deep Bass Lightweight Foldable, Built-in Mic - Black: .43dB Active Noise CancellingDNN Call Noise Reduction: Dual microphones + A algorithm for calls, which can separate the interfering noise of the environment in real time and extract clear human voices. Even if you are making a call in a noisy environment, the other party can hear it clearly.Up to 90