Tap the right hand sub-dial to start/stop the chronograph, the left hand dial to reset it and the top of the face to activate the split-time hands when the stop watch is running.
Tap the centre of the face to briefly display the user guides and to unlock the user controls for colour theme, outer ring display, dial brightness and second hand configuration.
Sweet! Nice and clean with great contrast… Are you duplicating the hands, colour set to black and off-set by 2-5 px dependent on the hand height on central spindle for the shadow? Cheers R