Side by side

Grand Seiko SLGB023vsTudor Black Bay GMT S&G

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

SLGB023
Grand SeikoSLGB023
MSRP $12,400
Black Bay GMT S&G
TudorBlack Bay GMT S&G
MSRP $5,825

At a glance

21 of 29 specs differ
Diameter
SLGB02340.8mm
Black Bay GMT S&G41mm
Power Reserve
SLGB02372h
Black Bay GMT S&G70h
Water Resistance
SLGB023300m
Black Bay GMT S&G200m
MSRP
SLGB023$12,400
Black Bay GMT S&G$5,825

Full specifications

Case

9 specs
Category
Diver
GMT
Diameter
40.8mm
41mm
Thickness
12.9mm
14.6mm
Lug-to-Lug
48.5mm
46mm
Lug Width
21mm
22mm
Material
Titanium
Stainless Steel
Finish
Brushed and polished
Polished + Satin
Water Resistance
300m
200m
Caseback
Solid
Engraved

Crystal & Dial

3 specs
Crystal Shape
Flat
AR Coating
Yes
Indices
Applied

Movement

8 specs
Caliber
9RB1
MT5652
Type
Spring Drive
Automatic
Beat Rate
28,800 vph
0 vph
Power Reserve
72h
70h
Jewels
25
0
Hacking
Yes
No
Hand-winding
Yes
No
Complications
None
GMT

Pricing

1 specs
MSRP
$12,400
$5,825

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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 SLGB023

Owners and reviewers widely praise the Grand Seiko SLGB023 for its comfortable 40.8mm titanium case and the smooth winding feel of its Spring Drive 9RB1 movement. The dial's gradient blue "ushio" motif is a highlight, though some reviewers note the bezel's fully lumed scale as a missed opportunity. Enthusiasts are divided on the power reserve indicator's placement and the design of the hour and minute hands. Overall, owners and reviewers rate the Grand Seiko SLGB023 highly for its comfortable titanium case and the refined Spring Drive movement.

Tudor Black Bay GMT S&G

Owners widely praise the Tudor Black Bay GMT S&G for its muted gold tone and cohesive design, with reviewers noting its value proposition around $5,000-$5,300, powered by an in-house GMT movement. Some owners find the 41mm case and weight make it feel large on the wrist, while reviewers are split on wearability and the execution of the "Root Beer" aesthetic. Concerns are raised about the aluminum bezel insert and initial wear on the gold plating at its price point, though some see the gold-capped bracelet and crown as understandable compromises. Overall, owners and reviewers rate the Tudor Black Bay GMT S&G highly for its unique aesthetic and strong value, with the cohesive design and GMT functionality being key draws.

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