Side by side

Sternglas Hamburg Pro AutomatikvsGrand Seiko SBGR321

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

Hamburg Pro Automatik
SternglasHamburg Pro Automatik
MSRP $755
SBGR321
Grand SeikoSBGR321
MSRP $5,200

At a glance

12 of 29 specs differ
Diameter
Hamburg Pro Automatik42mm
SBGR32140mm
Power Reserve
Hamburg Pro Automatik42h
SBGR32172h
Water Resistance
Hamburg Pro Automatik50m
SBGR321100m
MSRP
Hamburg Pro Automatik$755
SBGR321$5,200

Full specifications

Case

5 specs
Category
Sport
Dress
Diameter
42mm
40mm
Thickness
12mm
13mm
Lug-to-Lug
45mm
46.6mm
Water Resistance
50m
100m

Crystal & Dial

3 specs
AR Coating
Inner
Yes
Dial Color
Black
Lume
Luminova Indizes
None

Movement

3 specs
Caliber
Miyota 8215
9S65
Power Reserve
42h
72h
Jewels
25

Pricing

1 specs
MSRP
$755
$5,200

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What people say

Owners + reviewers, side by side

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

Sternglas Hamburg Pro Automatik

Owners widely praise the Sternglas Hamburg Pro Automatik for its Bauhaus-inspired design, German assembly, and excellent value, with many appreciating its comfortable wearability and uncluttered dial. Specific positive notes include a substantial weight that feels good on the wrist and a pleasing matte dial texture. The Miyota 8215 movement is generally considered reliable and surprisingly accurate, though some owners find it louder than expected and note the lack of hacking seconds. Caveats include a minimal instruction manual, an initially stiff strap, and a date window recess that can make the date difficult to see. Owners are split on the case finishing, with some finding it not too bad and nicely polished, while others criticize it. The case is also described by some as thick, making it potentially awkward for long-sleeved shirts. On balance, owners and reviewers rate the Sternglas Hamburg Pro Automatik highly for its attractive Bauhaus design and strong value proposition.

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.

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