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Mido Ocean Star 39vsSeiko Prospex Sea 1965 Heritage Diver's Watch

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

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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.

Mido Ocean Star 39

The 39mm case size and textured dial are consistently praised. Case finishing and bracelet quality are points of contention.

Seiko Prospex Sea 1965 Heritage Diver's Watch

The Seiko Prospex Sea 1965 Heritage Diver's Watch is praised for its refined engineering and updated features, including a 300m water resistance and a 72-hour power reserve from the Caliber 6R55 movement in a 40mm case. Owners note its better build quality and interesting finishing with a mix of polished and brushed surfaces. The "Tranquil Teal" variant features a jewel-toned dial with a rippling-water pattern. However, some owners consider the price too high, and concerns exist regarding the accuracy of the 6R movements, with some reporting theirs run slow. One review notes a reflective dial that impacts legibility. On balance, owners and reviewers appreciate the Seiko Prospex Sea 1965 Heritage Diver's Watch for its refined design and improved specifications over previous generations, despite some reservations about movement accuracy and price.

At a glance

16 of 29 specs differ
Diameter
Ocean Star 3939mm
Prospex Sea 1965 Heritage Diver's Watch40mm
Power Reserve
Ocean Star 39
Prospex Sea 1965 Heritage Diver's Watch72h
Water Resistance
Ocean Star 39200m
Prospex Sea 1965 Heritage Diver's Watch300m
MSRP
Ocean Star 39$1,250
Prospex Sea 1965 Heritage Diver's Watch$1,300

Full specifications

Case

7 specs
Category
Diver
Diameter
39mm
40mm
Thickness
0mm
13mm
Lug-to-Lug
0mm
46.4mm
Lug Width
0mm
20mm
Material
316L stainless steel
Stainless Steel
Water Resistance
200m
300m

Crystal & Dial

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

Movement

3 specs
Caliber
Mido Caliber 72
Seiko 6R55
Power Reserve
72h
Jewels
0
24

Pricing

1 specs
MSRP
$1,250
$1,300
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