How do I adjust the display brightness of the Noise Explorer smartwatch?

Swipe down from the home screen and set the brightness as per your preference.

 

How do I change the watch face of Noise Explorer smartwatch?

 

You can change the watch face of the Noise Explorer smartwatch from the Noise Amigo app.

On the Noise Amigo app, go to Device Setting, select watch face, tap 'Watch Face & Wallpaper' and choose.