Side by side

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

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 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 its 44mm lug-to-lug measurement is perfect for most wrists. The dial is inspired by Okinawa's ocean colors and is expected to feature a bright sunburst effect. Accuracy figures for the 6R35 movement range from -10/+10 seconds per day when off/on the wrist, which some find "pretty amazing." However, some owners consider the price of around 1500€ too high, suggesting a value closer to 900€, and there are mixed reports on the 6R movement's accuracy. Overall, owners rate the Seiko Prospex Sea 1965 Heritage Diver's Save the Ocean Special Edition highly for its distinctive dial and wearability, despite some reservations about its price point.

Seiko Monster

Owners widely praise the Seiko Prospex Sea for its excellent value, robust build, and superb lume, with many noting its comfortable wearability. Reviewers consistently highlight its impressive finishing and classic dive watch design, often comparing it favorably to older models. Some owners find the size substantial, with one noting it as big, thick, and heavy on a 6.5-inch wrist, while others find it perfect. On balance, owners and reviewers rate the Seiko Prospex Sea highly for its exceptional value and robust, classic dive watch design.

At a glance

9 of 29 specs differ
Diameter
Prospex Sea 1965 Heritage Diver's Save the Ocean Special Edition40.5mm
Monster42.4mm
Power Reserve
Prospex Sea 1965 Heritage Diver's Save the Ocean Special Edition70h
Monster41h
Water Resistance
Prospex Sea 1965 Heritage Diver's Save the Ocean Special Edition200m
Monster200m
MSRP
Prospex Sea 1965 Heritage Diver's Save the Ocean Special Edition$1,250
Monster$550

Full specifications

Case

3 specs
Diameter
40.5mm
42.4mm
Thickness
13.2mm
13.4mm
Lug-to-Lug
47.6mm
49.4mm

Crystal & Dial

3 specs
Crystal
Sapphire
Hardlex
Crystal Shape
Curved
AR Coating
Anti-reflective coating on inner surface

Movement

2 specs
Caliber
Seiko 6R35
Seiko 4R36
Power Reserve
70h
41h

Pricing

1 specs
MSRP
$1,250
$550
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