Side by side

Grand Seiko SBGR321vsYema Superman Gilt CMM.10

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

SBGR321
Grand SeikoSBGR321
MSRP $5,200
Superman Gilt CMM.10
YemaSuperman Gilt CMM.10
MSRP $1,699

At a glance

12 of 29 specs differ
Diameter
SBGR32140mm
Superman Gilt CMM.1039mm
Power Reserve
SBGR32172h
Superman Gilt CMM.1040h
Water Resistance
SBGR321100m
Superman Gilt CMM.10300m
MSRP
SBGR321$5,200
Superman Gilt CMM.10$1,699

Full specifications

Case

7 specs
Category
Dress
Diver
Diameter
40mm
39mm
Thickness
13mm
11.3mm
Lug-to-Lug
46.6mm
Lug Width
20mm
19mm
Material
Stainless Steel
316L Stainless Steel
Water Resistance
100m
300m

Crystal & Dial

2 specs
Crystal
Sapphire
Domed Sapphire
AR Coating
Yes
Inner

Movement

2 specs
Caliber
9S65
Yema CMM.10
Power Reserve
72h
40h

Pricing

1 specs
MSRP
$5,200
$1,699

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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.

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.

Yema Superman Gilt CMM.10

Owners and reviewers widely praise the Yema Superman Gilt CMM.10 for its comfortable, slim wearability and captivating gilt-accented sunburst dial, making it a frequent choice for daily wear. The in-house CMM.10 automatic movement is noted for its impressive accuracy, regulated to +5/-3 seconds per day, and a 70-hour power reserve. One owner wished for an option without gold accents, and the bracelet's articulation is mentioned as potentially not suiting smaller wrists, though a 39mm case option exists. Overall, owners and reviewers rate the Yema Superman Gilt CMM.10 highly for its value and comfortable, attractive design.

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