What protective and optimized functions does the Xiaomi OpenWear Stereo have?

It supports noise cancellation by default.
The specific opening method is shown below:
Download the [Xiaomi Earbuds] APP and connect. Turn on the [Noise cancellation] switch. You can experience noise cancellation after turning it on. You can also control it through gestures, and adjust the default function of [Press and hold left/right earphone] to the noise cancellation switch, so that you can turn on or off noise cancellation by touching the earphones.
The Xiaomi OpenWear Stereo supports IP54 dust and water-resistance rating, and the charging case meets the IPX2 waterproof standard requirements.
Note:
The product cannot be put into the washing machine for cleaning, otherwise the earphones and charging case will malfunction.