Side by side

Grand Seiko SLGA015vsTudor Black Bay 58 925

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

SLGA015
Grand SeikoSLGA015
MSRP $12,600
Black Bay 58 925
TudorBlack Bay 58 925
MSRP $5,600

At a glance

19 of 29 specs differ
Diameter
SLGA01543.8mm
Black Bay 58 92539mm
Power Reserve
SLGA015120h
Black Bay 58 92570h
Water Resistance
SLGA015200m
Black Bay 58 925200m
MSRP
SLGA015$12,600
Black Bay 58 925$5,600

Full specifications

Case

7 specs
Diameter
43.8mm
39mm
Thickness
13.8mm
12.7mm
Lug-to-Lug
51.5mm
46mm
Lug Width
23mm
20mm
Material
Titanium
Stainless Steel
Finish
Brushed and polished
Satin
Caseback
Solid
Solid screw-down

Crystal & Dial

4 specs
Crystal Shape
Flat
AR Coating
Yes
Dial Color
Black
Taupe
Indices
Applied

Movement

7 specs
Caliber
9RA5
MT5400
Type
Spring Drive
Automatic
Beat Rate
28,800 vph
0 vph
Power Reserve
120h
70h
Jewels
25
0
Hacking
Yes
No
Hand-winding
Yes
No

Pricing

1 specs
MSRP
$12,600
$5,600

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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 58 925

The Tudor Black Bay 58 925 is praised for its unique taupe dial and bezel, and COSC-certified movement. Owners widely report the silver case scratches and dings more easily than steel, and some experience tarnishing despite anti-tarnishing claims, though it can be cleaned with an eraser or silver cloth. While some find the leather strap uncomfortable due to weight imbalance, others consider it suitable. The dial can appear washed out in certain lighting, and one owner notes the long springbar can scratch the case if it pops out. On balance, owners and reviewers appreciate the Tudor Black Bay 58 925 for its unique silver case and taupe dial, despite concerns about scratching and tarnishing.

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