The Marine Torpilleur

From Ulysse Nardin -

Available in three different versions:

Courtesy of Ulysse Nardin

A 42 mm stainless-steel Marine Torpilleur with a white dial.

Courtesy of Ulysse Nardin

 A blue dial with stainless bracelet.

Courtesy of Ulysse Nardin

And a 42 mm 18 kt rose gold model.

Here are the pertinents, straight form the source -

Movement

caliber UN-118, 13 3⁄4‘’’
In-house designed movement
Escapement, patented DIAMonSIL
Oscillator: patented inertial balance wheel I 10 with silicium hairspring

Power Reserve

approximately 60 hours

Winding

self-winding

Functions

chronometer COSC with power reserve indicator at 12 o’clock small direct seconds and round date window at 6 o’clock forward and backward date corrector

Case
18 kt rose gold or stainless steel

Bezel
fluted, 18 kt rose gold or stainless steel

Dial
white or blue with roman numerals

Crown
screw down security crown 

Diameter
42 mm

Water-resistance
50 m

Crystal 
anti-reflective sapphire crystal

Case-back
open case-back with sapphire crystal

Strap
leather strap with folding buckle or stainless steel bracelet