Side by side

Seiko 62MASvsTudor Black Bay 58 Bronze

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

62MAS
Seiko62MAS
MSRP $1,200
Black Bay 58 Bronze
TudorBlack Bay 58 Bronze
MSRP $5,850

At a glance

15 of 29 specs differ
Diameter
62MAS40.5mm
Black Bay 58 Bronze39mm
Power Reserve
62MAS70h
Black Bay 58 Bronze70h
Water Resistance
62MAS200m
Black Bay 58 Bronze200m
MSRP
62MAS$1,200
Black Bay 58 Bronze$5,850

Full specifications

Case

6 specs
Diameter
40.5mm
39mm
Thickness
13.2mm
11.9mm
Lug-to-Lug
47.6mm
46mm
Material
Stainless Steel
Bronze
Finish
Brushed and polished
Brushed + Satin
Caseback
Solid
Engraved

Crystal & Dial

3 specs
Crystal Shape
Curved
AR Coating
Anti-reflective coating on inner surface
Lume
LumiBrite on hands, index(es) and bezel
None

Movement

5 specs
Caliber
6R35
MT5400
Beat Rate
28,800 vph
0 vph
Jewels
24
0
Hacking
Yes
No
Hand-winding
Yes
No

Pricing

1 specs
MSRP
$1,200
$5,850

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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 62MAS

The Seiko Prospex Sea 1965 Heritage Diver's Watch is praised for its vintage-inspired finishing, crisp bezel action, and build quality. Owners widely report the movement averages within +/- 10 seconds per day, though some note accuracy issues. The 40mm case size is considered by some to wear larger than expected, and the price point is a subject of debate, with some finding it too high and others fair. The watch features a 72-hour power reserve from the Caliber 6R55 movement, a 300-meter depth rating, and a box-shaped sapphire crystal. On balance, owners and reviewers appreciate the Seiko Prospex Sea 1965 Heritage Diver's Watch for its refined design and solid build quality, despite some reservations about its price and perceived size.

Tudor Black Bay 58 Bronze

The Tudor Black Bay 58 Bronze is widely praised for its unique, evolving aesthetic driven by its developing bronze patina, which owners describe as an incremental pleasure and a conversation starter. Reviewers highlight its warm, vintage feel, achieved through the aging bronze case, root-beer brown bezel, and rose gold-toned dive scale, complemented by applied Arabic numerals on a 39mm case. The MT5400 movement is noted for its 70-hour power reserve and COSC-certified accuracy, with one owner reporting a net loss of about one second every three days. The bezel action is described as firm and reassuring, tighter than steel Black Bay models. Owners report the watch wears well dressed up or down, and its finishing is favorably compared to higher-end brands. However, some owners note the soft bronze case scratches easily and can cause blueing on the wrist in hot weather.

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