Side by side

Grand Seiko SLGB023vsTudor Black Bay

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

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

Owners widely praise the Tudor Black Bay for its comfortable wearability, robust build, and vintage-inspired aesthetics, with specific mentions of its satisfying winding feel and sturdy bezel action. Reviewers highlight the 39mm Black Bay 58's comfortable size and thinness, while others note the 41mm Master Chronometer's reliable timekeeping and magnetic resistance. Some owners find the GMT hand difficult to distinguish in low light. A recurring point of contention across multiple sources is the lack of on-the-fly micro-adjustment on the bracelet, though some find aftermarket solutions adequate. One owner reported the watch losing two minutes a day after six years, requiring a service. Overall, owners and reviewers rate the Tudor Black Bay highly for its blend of vintage charm, modern robustness, and comfortable wearability.

From video reviewers

The COSC-certified accuracy of the movement is a notable strength. The 14.7mm to 14.8mm thickness is cited as a potential drawback. Reviewers are divided on whether the newer models represent a departure from the Black Bay's heritage design.

At a glance

14 of 29 specs differ
Diameter
SLGB02340.8mm
Black Bay41mm
Power Reserve
SLGB02372h
Black Bay70h
Water Resistance
SLGB023300m
Black Bay200m
MSRP
SLGB023$12,400
Black Bay

Full specifications

Case

8 specs
Diameter
40.8mm
41mm
Thickness
12.9mm
14.7mm
Lug-to-Lug
48.5mm
0mm
Lug Width
21mm
22mm
Material
Titanium
Stainless Steel
Finish
Polished + Satin
Water Resistance
300m
200m
Caseback
Engraved

Crystal & Dial

2 specs
AR Coating
Yes
Dial Color
Black

Movement

3 specs
Caliber
Grand Seiko 9RB1
Tudor MT5602
Type
Spring Drive
Automatic
Power Reserve
72h
70h

Pricing

1 specs
MSRP
$12,400
Keep exploring

More watches worth a look

Matched to the watches above on size, movement, style and price — microbrands first. Open any one to dig in.

Follow this matchup

Get a note when Grand Seiko SLGB023 vs Tudor Black Bay gets more votes, a community discussion, or a price drop. No account needed.

Adjacent matchups

People also compared

Comparisons nearby in the catalog — alternatives to the watches above paired against the matchup.