Side by side

Oris Big Crown DiamondsvsGrand Seiko SBGR321

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

Big Crown Diamonds
OrisBig Crown Diamonds
MSRP $3,300
SBGR321
Grand SeikoSBGR321
MSRP $5,200

At a glance

16 of 29 specs differ
Diameter
Big Crown Diamonds34mm
SBGR32140mm
Power Reserve
Big Crown Diamonds42 hoursh
SBGR32172h
Water Resistance
Big Crown Diamonds50m
SBGR321100m
MSRP
Big Crown Diamonds$3,300
SBGR321$5,200

Full specifications

Case

8 specs
Category
Dress
Diameter
34mm
40mm
Thickness
13mm
Lug-to-Lug
46.6mm
Lug Width
17mm
20mm
Finish
Brushed and polished
Water Resistance
50m
100m
Caseback
Solid

Crystal & Dial

3 specs
Crystal Shape
Flat
AR Coating
Underside
Yes
Indices
Applied

Movement

4 specs
Caliber
531
9S65
Beat Rate
4 vph
28,800 vph
Power Reserve
42 hoursh
72h
Jewels
25

Pricing

1 specs
MSRP
$3,300
$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.

Oris Big Crown Diamonds

Owners widely praise the Oris Big Crown Diamonds for its timeless design, vintage charm, and recognizable details like cathedral hands and the pointer date function. Reviewers highlight the stunning gradient dial and the "Bullseye" tuxedo dial as particularly beautiful. The 38mm case is considered versatile, and the watch offers remarkable value. However, some owners note the standard Sellita movement has a short power reserve and plain finishing, and the strap is not durable. A reviewer points out slightly imperfect Super-LumiNova printing on the hour numerals, and one owner finds the two-tone bracelet overly flashy. On balance, owners and reviewers rate the Oris Big Crown Diamonds highly for its unique design and value at its price point.

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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