Skip to content
IWC Schaffhausen Portofino Chronograph Edition "S.Y. Lee"

IWC Schaffhausen Portofino Chronograph Edition "S.Y. Lee"

AutomaticSteel

Ref. IW391034

Collection: PortofinoCase size: 42mmMovement: 79320

The IWC chronograph with a 42 mm steel case, reference IW391034, is the Portofino Chronograph Edition "S.Y. Lee". This special edition has a 13.6 mm thick case. Self-winding calibre 79320 has a 44-hour power reserve, 25 jewels and 240 components. Convex sapphire glass with antireflective coating on both sides covers the silver dial with a day and date display and small hacking seconds. The watch is on a blue alligator leather strap, and the case carries a water-resistance rating of 30 metres. The movement has Côtes de Genève and perlage decoration and runs at 28,800 vibrations per hour.

Add to my inventory

Free account required - pre-fills all specs automatically

Last updated 10 Oct 2026Suggest a correction

TECHNICAL SPECIFICATIONS

CASE

Diameter

42mm

Thickness

13.6mm

Lug Width

20mm

Case Material

Steel

Water Resistance

30m

Crystal

Sapphire Crystal

MOVEMENT

Movement Type

Automatic

Caliber

79320

Power Reserve

44h

Frequency

28,800 vph (4 Hz)

Jewels

25 jewels

DIAL

Dial Color

Silver

BRACELET/STRAP

Bracelet/Strap

Alligator Skin

FEATURES & COMPLICATIONS

ChronographDateSmall secondsSpecial EditionWeekday

More from IWC Schaffhausen

Show all →

Other watches with the 79320 calibre

Show all →

FOR WATCH DEALERS

Trading the IWC Schaffhausen Portofino Chronograph Edition "S.Y. Lee"?

Clone any catalog watch into your stock, sync it to Chrono24 and eBay, and invoice it with your own tax settings.