IWC Portofino IW3331-07
The IWC Portofino IW3331-07 takes an 18 mm watch band.
IWC · Portofino
- Lug width
- 18 mm
- Case diameter
- 34 mm
- Reference
- IW3331-07
- Family
- Portofino
- Case material
- Acciaio
- Model
- Portofino Quartz Stainless Steel
- Year
- 1988 - 2002
Bands that fit
Cut and stitched in Milano, in the width this watch takes.
Hammered Black Calfskin Strap — Ecru Stitching
Brown Italian Leather Strap
Black Saffiano Strap Ecru Stitching
Vintage Brown Calfskin Strap — Natural Patina
Swift Topo Leather Strap
Green Lizard StrapWill a strap close on your wrist?
Set for this watch: 34 mm of case and 18 mm between the lugs. Add your wrist and see where a standard strap would close.
mm
Filled in with the case diameter, which is what we hold for this reference. Measure the watch tip to tip for the exact answer: it is usually a few mm more.
Enter your wrist measurement to see whether a standard 75/115 mm strap closes on you, and where.
Sizing notes
- 18 mm is the gap between the lugs, so a 18 mm band goes in without adapters. Whether it sits flush against a 34 mm case depends on how that case is shaped.
- Inside the Portofino family the lug width is not one number: it runs 16, 18, 19, 20, 22 mm. This reference is the 18 mm one, so a band bought for another Portofino may not fit it. Why the size changes inside a family →
- 18 mm is not a common size: only 3,965 of the 41,485 watches measured take it (9.6%), so ready-made choice at this width is narrower than at 20 or 22 mm. Every watch that takes 18 mm →
Other Portofino references
- Portofino Ultra-Thin Yellow GoldIW2010-01
18 mm - Portofino Quartz Yellow GoldIW3331-03
18 mm - Portofino Perpetual Calendar Stainless Steel / SilverIW3446-01
20 mm - Portofino Perpetual Calendar Rose Gold / SilverIW344602
20 mm - Portofino Automatic Yellow Gold / White / StrapIW3513-01
18 mm - Portofino Automatic Yellow Gold / Champagne / StrapIW3513-02
18 mm
Same lug width, other IWC lines
- Ingenieur 666AD Stainless Steel / Black666AD
18 mm - Ingenieur SL Jumbo Stainless Steel / BlackIW1832-01
18 mm - Ingenieur Automatic AMG Black Series CeramicIW3225-03
18 mm - Ingenieur Automatic Titanium / CLS55 / BraceletIW3227-07
18 mm - Ingenieur Automatic Stainless Steel / JapanIW3227-11
18 mm - Ingenieur Automatic Climate ActionIW3234-02
18 mm