Side by side

Grand Seiko SBGR321vsLongines LEGEND DIVER 42

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

SBGR321
Grand SeikoSBGR321
MSRP $5,200
LEGEND DIVER 42
LonginesLEGEND DIVER 42
MSRP $2,850

At a glance

12 of 29 specs differ
Diameter
SBGR32140mm
LEGEND DIVER 4242mm
Power Reserve
SBGR32172h
LEGEND DIVER 4272h
Water Resistance
SBGR321100m
LEGEND DIVER 42300m
MSRP
SBGR321$5,200
LEGEND DIVER 42$2,850

Full specifications

Case

6 specs
Category
Dress
Diver
Diameter
40mm
42mm
Thickness
13mm
12.7mm
Lug-to-Lug
46.6mm
52.6mm
Lug Width
20mm
22mm
Water Resistance
100m
300m

Crystal & Dial

3 specs
AR Coating
Yes
Both sides
Dial Color
Black
Blue
Lume
None
Super-LumiNova

Movement

2 specs
Caliber
9S65
L888.5
Beat Rate
28,800 vph
25,200 vph

Pricing

1 specs
MSRP
$5,200
$2,850

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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.

Longines LEGEND DIVER 42

Owners widely praise the Longines Legend Diver 42 for its appealing retro skin-diver aesthetic, excellent legibility, and functional inner bezel, with reviewers noting its strong value proposition below $2,500 and capability in shallow dives. Some owners find the blue dial pops in the sun and appreciate the quickset date. However, several owners report disappointment after seeing the watch in person, finding it underwhelming and lacking dial depth. Specific criticisms include original leather straps peeling easily, a clasp that scratches readily, dust getting on the dial, and lume that is not particularly strong or matching vintage charm. The 50mm lug-to-lug length is noted as potentially overwhelming for smaller wrists, and one owner experienced the minute hand scratching the hour hand. Accuracy figures are not consistently reported across sources.

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