Xiaomi Redmi Buds 6 Play Earbud Noise-Cancelling Bluetooth Earphones - Blue

The noise reduction which is marked is not a reduction of external noise, but to reduce the noise in the event of call for that which is at the other end of the call. It's very misleading in the sense that a headset with noise reduction in the common sense in which it's used is mainly for people listening to music to avoid surrounding noise.