Erwin Classic:
In House Jumping Dead Second Complication A11S movement
aka Deadbeat Second, True Second, ie the seond hand "ticks" rather than sweeps. It is a fantastic; "If you know, you know" complication
9mm high, 38.5mm, 46mm lug to lug, 20mm lug (strap) width
Waterproof to 30m
Beautiful minimalist design
Sapphire caseback