The Ulysse Nardin Marine Chronograph Annual Calendar 43mm

Polished 18kt rose gold case.

Polished finished fixed bezel with a fluted edge.

Brushed finished crown guard.

Crown with fluted rubber ring for a secure grip.

Rectangle chronograph buttons with rubber inlay.

Off white lacquered dial with slightly recessed sub-dials.

Black printed Roman numeral hour markers.

Raised flange on the dial perimeter with a fine printed minutes/seconds, fractions-of-a-second track & triangle hour markers.

Polished blackened steel hands, the hour & minute hands with luminous tips.

Small running-seconds sub-dial located at the 6 o’clock position.

Chronograph/Stopwatch functions:

Column wheel chronograph mechanism.

Large polished central seconds counter hand.

30 minute counter sub-dial located at the 3 o’clock position.

12 hour counter sub-dial located at the 3 o’clock position.

Annual Calendar Complication:

The Annual Calendar complication will accurately account for the current number of of days in each month with the exception of the 29th day of February in a leap year.

Date window located at the 6 o’clock position.

Month displayed at the center of the 9 o’clock sub-dial. The red hand points to the current month.

Ulysse Nardin in-house manufactured Caliber UN-153 features:

Beats at 28,800 vph.

Contains 53 Jewels.

Composed out of 322 parts.

An approximate power reserve of 52 hours.

The movement features an escapement wheel & lever which is produced using DIAMonSIL, Ulysse Nardin’s revolutionary alliance of diamond and silicon. DIAMonSIL is silicon treated with a thin layer of diamond coating that not only eliminates the need for lubrication, but also significantly increases the part’s durability.

Ulysse Nardin’s patented silicon hairspring & in-housed produced oscillator with 4 correction screws.

Rotor features 2 anchors as part of the rotor design & a blue medallion made of DIAMonSIL with the UN logo.