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IWC Schaffhausen Iw658601 Portofino AutomaticvsGrand Seiko SBGR321

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
SBGR321
Grand SeikoSBGR321
MSRP $5,200
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 SBGR321

Grand Seiko SBGR321 owners and reviewers widely praise its attractive design, compelling dimensions, and robust movement. The watch features sharp case lines with contrasting brushing and polishing, a 40mm steel case that provides presence without bulk, and 100m water resistance. Its sunburst blue dial, inspired by the dawn sky over Mount Iwate, showcases Grand Seiko's signature finishing on applied markers and hands, with a red-tipped seconds hand. The 9S65 automatic movement is noted for its precision, running within specifications, with one source reporting a +5 to -3 seconds a day rate and a 3-day power reserve. A blue rotor with a crimson rim, also inspired by Mount Iwate, is visible through the display caseback. On balance, owners and reviewers rate the Grand Seiko SBGR321 highly for its exceptional finishing and compelling blue dial design at its price point.

At a glance

16 of 29 specs differ
Diameter
Iw658601 Portofino Automatic37mm
SBGR32140mm
Power Reserve
Iw658601 Portofino Automatic120h
SBGR32172h
Water Resistance
Iw658601 Portofino Automatic50m
SBGR321100m
MSRP
Iw658601 Portofino Automatic$16,300
SBGR321$5,200

Full specifications

Case

8 specs
Diameter
37mm
40mm
Thickness
9.4mm
13mm
Lug-to-Lug
46.6mm
Lug Width
18mm
20mm
Material
18 Ct 5N Gold
Stainless Steel
Finish
Steel
Brushed and polished
Water Resistance
50m
100m
Caseback
Solid

Crystal & Dial

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

Movement

3 specs
Caliber
32111
9S65
Power Reserve
120h
72h
Jewels
21
25

Pricing

1 specs
MSRP
$16,300
$5,200
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