Side by side

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

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

Oceanking
MontaOceanking
MSRP $2,550

At a glance

13 of 29 specs differ
Diameter
Oceanking40mm
Prospex Sea 1965 Heritage Diver's Save the Ocean Special Edition40.5mm
Power Reserve
Oceanking40h
Prospex Sea 1965 Heritage Diver's Save the Ocean Special Edition70h
Water Resistance
Oceanking305m
Prospex Sea 1965 Heritage Diver's Save the Ocean Special Edition200m
MSRP
Oceanking$2,550
Prospex Sea 1965 Heritage Diver's Save the Ocean Special Edition$1,250

Full specifications

Case

5 specs
Diameter
40mm
40.5mm
Thickness
13.2mm
Lug-to-Lug
48mm
47.6mm
Lug Width
20mm
Water Resistance
305m
200m

Crystal & Dial

4 specs
Crystal Shape
Flat
Curved
AR Coating
Inner
Anti-reflective coating on inner surface
Dial Color
Blue
Black
Lume
None
LumiBrite on hands, index(es) and bezel

Movement

3 specs
Caliber
Monta M-22
6R35
Power Reserve
40h
70h
Jewels
25
24

Pricing

1 specs
MSRP
$2,550
$1,250

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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.

Monta Oceanking

Owners and reviewers widely praise the Monta Oceanking for its refined aesthetics, excellent fit and finish for its price point, and comfortable, supple bracelet with a micro-adjustment clasp. The watch features a legible dial with enlarged luminous markers and hands, a well-done glossy and deep bezel, and a svelte sub-41mm case with a shorter lug-to-lug. Some owners note minor gripes with bezel alignment and movement accuracy, while one reviewer found the tapering crown tricky to grip and the bezel had slight play. The Sellita SW300 movement provides a power reserve of either 42 or 56 hours, depending on the source, and the watch includes a date at six o'clock. Overall, owners and reviewers rate the Monta Oceanking highly for its comfortable wearability and tool-focused, sportier stance.

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.

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