Side by side

IWC Schaffhausen Iw658601 Portofino AutomaticvsGrand Seiko SBGW257

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

Iw658601 Portofino Automatic
IWC SchaffhausenIw658601 Portofino Automatic
MSRP $16,300
SBGW257
Grand SeikoSBGW257
MSRP $38,000
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 Iw658601 Portofino Automatic

Owners widely praise the IWC Schaffhausen Iw658601 Portofino Automatic's elegant, simple design and thin 9.4mm case, making it a versatile dress watch suitable for everyday wear. Its classical look, rounded bezel, and sunburst dial are frequently highlighted as attractive features. Some owners find the 37mm case size comfortable and appreciate its slim profile, contrary to perceptions of IWC watches being bulky. Accuracy reports vary, with one owner noting excellent timekeeping and another observing a loss of almost 10 seconds per day. The value proposition is debated, with some questioning the use of an external movement at its price point. On balance, owners and reviewers appreciate the IWC Schaffhausen Iw658601 Portofino Automatic for its classic dress watch aesthetic and wearability, though some debate its value.

Grand Seiko SBGW257

The Grand Seiko SBGW257 is a platinum dress watch praised for its refined, subtle luxury and classic design. Reviewers highlight its 38mm diameter and 10.9mm thickness as near-perfect sizing for a dress watch. The watch features an 18k white gold dial with a sunray-brushed silver finish and gold hour markers, complemented by a refined application of the Grand Seiko wordmark. It is powered by the manual-wind Caliber 9S64 movement, offering a 72-hour power reserve and an accuracy rating of +5 to -3 seconds per day. The Grand Seiko SBGW257 is priced at €39,000. On balance, reviewers appreciate the Grand Seiko SBGW257 for its exquisite finishing and classic proportions, embodying a quiet luxury.

At a glance

17 of 29 specs differ
Diameter
Iw658601 Portofino Automatic37mm
SBGW25738mm
Power Reserve
Iw658601 Portofino Automatic120h
SBGW25772h
Water Resistance
Iw658601 Portofino Automatic50m
SBGW25730m
MSRP
Iw658601 Portofino Automatic$16,300
SBGW257$38,000

Full specifications

Case

8 specs
Diameter
37mm
38mm
Thickness
9.4mm
10.9mm
Lug-to-Lug
45.8mm
Lug Width
18mm
19mm
Material
18 Ct 5N Gold
Platinum
Finish
Steel
Brushed and polished
Water Resistance
50m
30m
Caseback
Solid

Crystal & Dial

4 specs
Crystal Shape
Flat
AR Coating
Yes
Dial Color
Silver
Black
Indices
Applied

Movement

4 specs
Caliber
32111
9S64
Type
Automatic
Manual
Power Reserve
120h
72h
Jewels
21
25

Pricing

1 specs
MSRP
$16,300
$38,000
Keep exploring

More watches worth a look

Matched to the watches above on size, movement, style and price — microbrands first. Open any one to dig in.

Follow this matchup

Get a note when IWC Schaffhausen Iw658601 Portofino Automatic vs Grand Seiko SBGW257 gets more votes, a community discussion, or a price drop. No account needed.

Adjacent matchups

People also compared

Comparisons nearby in the catalog — alternatives to the watches above paired against the matchup.