Side by side

Seiko Prospex Sea 1965 Heritage Diver's WatchvsZelos Mako 4

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

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 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.

Zelos Mako 4

Owners widely praise Zelos' dial finishing, with specific admiration for blued markers and hands, and the unique titanium bezel insert. Reviewers highlight the Mako 4's impressive case finishing and fully lumed ceramic bezel for its price point, noting the boxed sapphire crystal and wavy dial texture contribute to a vintage feel. The Sellita SW200 movement is described as reliable, with one owner reporting accuracy of -0.3 seconds per day. However, the crown can be difficult to grip, and the winding mechanism offers resistance when screwing down, while the watch's height may hinder wearability under a suit cuff. The tropic rubber strap is considered excellent, in contrast to a stiff leather option. On balance, owners and reviewers rate the Zelos Mako 4 highly for its exceptional dial and case finishing at its price point.

At a glance

12 of 29 specs differ
Diameter
Prospex Sea 1965 Heritage Diver's Watch40mm
Mako 440mm
Power Reserve
Prospex Sea 1965 Heritage Diver's Watch72h
Mako 4
Water Resistance
Prospex Sea 1965 Heritage Diver's Watch300m
Mako 4300m
MSRP
Prospex Sea 1965 Heritage Diver's Watch$1,300
Mako 4$529

Full specifications

Case

3 specs
Thickness
13mm
12.2mm
Lug-to-Lug
46.4mm
40mm
Material
Stainless Steel
316L Stainless Steel

Crystal & Dial

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

Movement

3 specs
Caliber
6R55
Miyota 9015
Power Reserve
72h
0h
Jewels
24
0

Pricing

1 specs
MSRP
$1,300
$529
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