MEGIR Square Chronograph MS2217 4 in 1

Double Tap 6 to Unlock Tap Functions / Single Tap to Lock tap functions.

Centre to Zoom.

Between 1 & 2 to Start/Pause/Stopwatch - double tap to Reset. The hands park out of the way, revert back when stopwatch reset.

3 to adjust Brightness.

9 to toggle Dim - Auto / On / Off.

12 to toggle Faces.

Second Hand Battery Reserve in Dim.