Side by side

IWC Schaffhausen Iw3565 Portofino AutomaticvsOmega Constellation Observatory Co Axial Master Chronometer 39 4mm

The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.

What people say

Owners + reviewers, side by side

Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.

IWC Schaffhausen Iw3565 Portofino Automatic

Owners widely praise the IWC Schaffhausen Portofino for its clean, classic dress watch aesthetic and refined dial details, with many finding the 40mm size perfect for smaller wrists and noting its ability to provide a spark of joy. Some owners admire the dial color in sunlight and the versatility offered by changing straps. One owner notes its modified Sellita SW300/ETA 29xx movement is reliable and accurate, and another reports excellent timekeeping, with IWC reportedly maintaining chronometer standards. However, some find the Portofino overpriced and less valuable compared to watches with in-house movements. One owner reported their watch stopped working immediately after being dropped and required a lengthy repair. On balance, owners and reviewers rate the IWC Schaffhausen Portofino highly for its classical sophistication and understated elegance.

Omega Constellation Observatory Co Axial Master Chronometer 39 4mm

Owners widely praise the Omega Constellation Observatory Co Axial Master Chronometer 39 4mm for its fantastic presence and discreet elegance, finding it suitable for both suits and casual wear. Reviewers highlight its reinterpretation of vintage design with a pie-pan dial, dog-leg lugs, and kite-shaped hands and indexes, noting its certification as a Master Chronometer. Some owners find the case thick and the lugs awkward, while others prefer its clean design and unique details over other models. One owner wishes to switch straps but notes Omega does not sell alternatives. On balance, owners and reviewers appreciate the Omega Constellation Observatory Co Axial Master Chronometer 39 4mm for its elegant design and Master Chronometer certification, despite some reservations about case thickness and lug design.

At a glance

14 of 29 specs differ
Diameter
Iw3565 Portofino Automatic40mm
Constellation Observatory Co Axial Master Chronometer 39 4mm39.4mm
Power Reserve
Iw3565 Portofino Automatic50h
Constellation Observatory Co Axial Master Chronometer 39 4mm60h
Water Resistance
Iw3565 Portofino Automatic30m
Constellation Observatory Co Axial Master Chronometer 39 4mm30m
MSRP
Iw3565 Portofino Automatic$15,500
Constellation Observatory Co Axial Master Chronometer 39 4mm$37,900

Full specifications

Case

6 specs
Diameter
40mm
39.4mm
Thickness
9.2mm
12.23mm
Lug-to-Lug
47.2mm
Lug Width
20mm
19mm
Material
18 Ct 5N Gold
18kt Moonshine Gold
Finish
Steel
O-MEGASTEEL

Crystal & Dial

3 specs
Crystal
Sapphire
Crystal Shape
Domed
Dial Color
Black
Silver

Movement

4 specs
Caliber
35111
Omega 8914
Beat Rate
28,800 vph
0 vph
Power Reserve
50h
60h
Jewels
25
0

Pricing

1 specs
MSRP
$15,500
$37,900
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