Side by side

IWC Schaffhausen Iw658601 Portofino AutomaticvsGrand Seiko SBGW258

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
SBGW258
Grand SeikoSBGW258
MSRP $26,000
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 SBGW258

The Grand Seiko SBGW258 is a yellow gold dress watch featuring a 38mm case and a manual-wind caliber 9S64 movement with a 72-hour power reserve, rated for accuracy to +5/-3 seconds per day. It includes a raised gold logo on the dial and comes with a brown leather strap. On balance, reviewers highlight the Grand Seiko SBGW258 as a classic, precious metal timepiece representing fine watchmaking tradition.

At a glance

17 of 29 specs differ
Diameter
Iw658601 Portofino Automatic37mm
SBGW25838mm
Power Reserve
Iw658601 Portofino Automatic120h
SBGW25872h
Water Resistance
Iw658601 Portofino Automatic50m
SBGW25830m
MSRP
Iw658601 Portofino Automatic$16,300
SBGW258$26,000

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
Gold
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
$26,000
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