Swiss made, automatic (bidirectional winding), 28,800 vph (4Hz), 70-hour power reserve, 31 jewels. Functions: hours, minutes, central seconds, instantaneous date at 3 o’clock with secure rapid-setting stop-seconds. Superlative Chronometer -2/+2 seconds per day. Traversing balance bridge. Free sprung balance with variable inertia weights. Parachrom hairspring. Paraflex shock absorbers. Chronenergy escapement. Paramagnetic nickel-phosphorous pallet fork and escape wheel. Superlative chronometer -2//+2 sec/day after casing.

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