Side by side

Seiko Prospex Marinemaster Marinemaster 1968 Heritage Diver's WatchvsTudor Black Bay 58 925

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

Black Bay 58 925
TudorBlack Bay 58 925
MSRP $5,600

At a glance

18 of 29 specs differ
Diameter
Prospex Marinemaster Marinemaster 1968 Heritage Diver's Watch42.6mm
Black Bay 58 92539mm
Power Reserve
Prospex Marinemaster Marinemaster 1968 Heritage Diver's Watch72h
Black Bay 58 92570h
Water Resistance
Prospex Marinemaster Marinemaster 1968 Heritage Diver's Watch300m
Black Bay 58 925200m
MSRP
Prospex Marinemaster Marinemaster 1968 Heritage Diver's Watch$3,600
Black Bay 58 925$5,600

Full specifications

Case

6 specs
Diameter
42.6mm
39mm
Thickness
14.1mm
12.7mm
Lug-to-Lug
49.3mm
46mm
Finish
Brushed and polished
Satin
Water Resistance
300m
200m
Caseback
Solid
Solid screw-down

Crystal & Dial

5 specs
Crystal Shape
Curved
AR Coating
Anti-reflective coating on inner surface
Dial Color
Black
Taupe
Indices
Applied
Lume
LumiBrite on hands, index(es) and bezel
None

Movement

6 specs
Caliber
8L45
MT5400
Beat Rate
28,800 vph
0 vph
Power Reserve
72h
70h
Jewels
35
0
Hacking
Yes
No
Hand-winding
Yes
No

Pricing

1 specs
MSRP
$3,600
$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.

Seiko Prospex Marinemaster Marinemaster 1968 Heritage Diver's Watch

The Seiko Prospex Marinemaster 1968 Heritage Diver's Watch is widely praised for its excellent quality and finishing, with reviewers and owners noting its GS-level craftsmanship and Zaratsu-inspired polishing. Owners appreciate its refined design, comfortable case shape, and the 4:00 crown position, with some finding it more manageable on the wrist than other models. The Caliber 8L45 movement offers a 72-hour power reserve and accuracy within -5/+10 seconds per day, and the bracelet features an improved clasp with an extension system. However, some find the price point high, and one reviewer noted the unsigned winding crown as a missed opportunity. On balance, owners and reviewers rate the Seiko Prospex Marinemaster 1968 Heritage Diver's Watch highly for its premium finishing and tool-like appearance at its price point.

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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