Swiss made, automatic, 28,800 vph (4Hz), 70-hour power reserve, 28.50 mm diameter, 31 jewels. Superlative Chronometer -2/+2 seconds per day. Traversing balance bridge. Parachrom balance spring.
Rolex 3285
Swiss made, automatic, 28,800 vph (4Hz), 70-hour power reserve, 28.50 mm diameter, 31 jewels. Superlative Chronometer -2/+2 seconds per day. Traversing balance bridge. Parachrom balance spring.