Seiko Prospex Sea 1965 Heritage Diver's Save the Ocean Special EditionvsZelos Mako 4

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Measurements

Catalog photos are all shot at the same flattering size. These aren't: every case below shares one millimeter scale.

Seiko Prospex Sea 1965 Heritage Diver's Save the Ocean Special Edition at true scale

Prospex Sea 1965 Heritage Diver's Save the Ocean Special Edition

Zelos Mako 4 at true scale

Mako 4

Diameter

40.5mm

40mm

Lug-to-Lug

47.6mm

n/a

Thickness

13.2mm

12.2mm

lowest

Water Resistance

200m

300m

highest

Power Reserve

70h

n/a

MSRP

$1,250

$599

lowest

Movement

Seiko 6R35

Miyota 9015

Case

5 specs
Diameter
40.5mm
40mm
Thickness
13.2mm
12.2mm
Lug-to-Lug
47.6mm
n/a
Material
Stainless Steel
316L Stainless Steel
Water Resistance
200m
300m

Crystal & Dial

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

Movement

3 specs
Caliber
Seiko 6R35
Miyota 9015
Power Reserve
70h
0h
Jewels
24
0

Pricing

1 specs
MSRP
$1,250
$599
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Reviews

Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.

Seiko Prospex Sea 1965 Heritage Diver's Save the Ocean Special Edition

Owners widely praise the Seiko Prospex Sea 1965 Heritage Diver's Save the Ocean Special Edition for its unique dial color and execution, with one owner noting the 44mm lug-to-lug is perfect for most wrists. The watch is considered a refined piece with a fun factor, featuring a dial inspired by Okinawa's ocean colors expected to have a bright sunburst effect. Accuracy figures for the 6R35 movement range, with one owner reporting -10/+10 seconds per day as "pretty amazing," while others note issues with the 6R movement's accuracy. Some owners find the price of 1500€ too high, suggesting a value closer to 900€. On balance, owners and reviewers rate the Seiko Prospex Sea 1965 Heritage Diver's Save the Ocean Special Edition well for its dial execution and wearability, despite some debate over its price point.

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.

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