The Marine Annual Calendar

Courtesy of Ulysse Nardin

From Ulysse Nardin

Here are the pertinents -

Reference:
153-150/EO 

Movement:
caliber UN-153 
in-house designed movement
Silicium escapement and spring, 28,800 v/h

Power-Reserve:
approximately 52 hours

Winding:
mechanical, self-winding

Functions:
chronograph with central seconds hand
30 minute counter at 3 o'clock
small seconds counter at 9 o'clock
annual calendar, backward/forward setting
date at 6 o'clock

Case:
43 mm stainless steel, water resistant to 100 meters.
sapphire crystal display back, anti-reflective sapphire crystal top

Dial:
Grand Feu white enamel, blued roman numerals

Strap:
leather with folding buckle