Polished stainless steel 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.
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.
Blackened steel hands, the hour & minute hands with luminous tips.
Small running-seconds sub-dial located at the 6 o’clock position.
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.