Patek Philippe 5270

Chronograph and perpetual calendar
Mechanical manually wound movement
Caliber CH 29-535 PS Q
Central chronograph hand and instantaneous 30-minute counter
Day, month, leap year and day/night indication in apertures
Date by hand
Moon phases
Seconds subdial
Silvery-opaline dial, black oxidized gold applied numerals
Strap: alligator with square scales, hand-stitched, matt black
Fold-over clasp
Interchangeable full back and sapphire-crystal case back
Water resistant to 30 m
White Gold
Case diameter: 41 mm
Vacheron Costantin Patrimony Traditionelle
Reference: 1120 QP SQ
Energy: automatic
Thickness (mm): 4.05
Diameter (mm): 29.60 (12''' ½)
Number of parts: 276
Number of jewels: 36
Frequency: 2.75 Hz (19'800 v.p.h.)
Power-reserve (hours): 40 approx.
Indication: hours, minutes, perpetual calendar (hand-type calendar, day of the week, month, leap year, moon phases)
Remark: openworked movement
Certification: Hallmark of Geneva
A. Lange Datograph Perpetual
Movement: Manual Winding COSC
Engine: L952.1 (18,000 vph, 45 rubies)
Functions: Hours, Minutes, Chronograph, Perpetual calendar, Tachometer (on flange)
Watch Chronograph: 1/5 second flyback chronograph with jumping minute counter. The precise minute counter at 4 o'clock prevents misreadings of the minutes by jumping through one minute intervals. With a single press of the chrono flyback button, the chronograph is reset and instantly restarts. The chronograph is driven by a classic column wheel.
Crystal Material: Sapphire - Anti-reflective
Case Diameter: 41.0 mm
Case Thickness: 13.5 mm
IWC Portoghese Grande Complicazione

REFERENCEIW377401
CASE MATERIALplatinum
BRACELET/STRAPblack alligator leather strap
DIAL COLOURsilver-plated
JEWELS75
CALIBRE79091
Limited edition of 50 watches per year
Mechanical chronograph movement
Self-winding
44-hour power reserve when fully wound
Perpetual calendar with displays for the date
day, month, year in four digits and perpetual moon phase
Stopwatch function with hours, minutes and seconds
Minute repeater for hours, quarters and minutes
Small hacking seconds
Sapphire glass, arched edge, antireflective coating on both sides
Special back engraving
Water-resistant 3 bar
Case height 16.5 mm
Diameter 45 mm