Benyar Chronograph BY-3315M

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

Between 1 and 2 to Start/Pause/Reset Stopwatch

3 to adjust Brightness

Center to Zoom

9 to toggle Dim - Auto / On / Off

Between 10 and 11 to toggle Faces

Second Hand Battery Reserve in Dim