Side by side

Grand Seiko SLGA015vsTudor Black Bay 58

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

SLGA015
Grand SeikoSLGA015
MSRP $12,600
Black Bay 58
TudorBlack Bay 58
MSRP $5,350

At a glance

17 of 29 specs differ
Diameter
SLGA01543.8mm
Black Bay 5839mm
Power Reserve
SLGA015120h
Black Bay 5865h
Water Resistance
SLGA015200m
Black Bay 58200m
MSRP
SLGA015$12,600
Black Bay 58$5,350

Full specifications

Case

7 specs
Diameter
43.8mm
39mm
Thickness
13.8mm
11.7mm
Lug-to-Lug
51.5mm
46mm
Lug Width
23mm
20mm
Material
Titanium
Stainless Steel
Finish
Brushed and polished
Polished + Satin
Caseback
Solid
Solid screw-down

Crystal & Dial

2 specs
Crystal Shape
Flat
AR Coating
Yes

Movement

7 specs
Caliber
9RA5
MT5400-U
Type
Spring Drive
Automatic
Beat Rate
28,800 vph
0 vph
Power Reserve
120h
65h
Jewels
25
0
Hacking
Yes
No
Hand-winding
Yes
No

Pricing

1 specs
MSRP
$12,600
$5,350

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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 SLGA015

The Grand Seiko SLGA015 is widely praised for its exceptional accuracy, with owners reporting performance far exceeding the stated 10 seconds per month. The Spring Drive movement's smooth sweep and 5-day power reserve are also noted strengths, as is the lighter titanium case construction. However, some owners find the bracelet extension non-intuitive, and one noted the clasp scratched easily. The watch features a nature-inspired, wave-like dial texture. Overall, owners rate the Grand Seiko SLGA015 highly for its impressive accuracy and quality construction.

Tudor Black Bay 58

The Tudor Black Bay 58 is widely praised for its superb wearing experience, perfect proportions, and comfortable wearability, with owners anticipating it becoming a Tudor classic. Reviewers highlight its substantial, rugged build quality and significant value, rivaling more expensive timepieces. One owner notes the clasp's sharp shield as a minor annoyance.

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