Tutorial – Double Face, Rotate Timezone Watch

Girard Perregaux black and white in one watch
Tap above the GP logo to select your preferred zone (watch the movement of the bezel)
The centre 24h dial rotates to keep your selected timezone time at the top of the watch (12 position)
To reset zones to 0 tap small dial at 6 o'clock position
Stopwatch start at dial 3 o'clock
Reset dial at 9 o'clock
Tap centre of watch to switch between black and white versions
Many thanks to +Nite Owl​​​ for helping me out with some of my graphical problems.
It wasn't easy to combine 2 different pictures at slightly different orientations.