Side by side

Seiko Prospex Marinemaster Marinemaster 1968 Heritage Diver's WatchvsOrient Kamasu

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

Kamasu
OrientKamasu
MSRP $375

At a glance

15 of 29 specs differ
Diameter
Prospex Marinemaster Marinemaster 1968 Heritage Diver's Watch42.6mm
Kamasu41.8mm
Power Reserve
Prospex Marinemaster Marinemaster 1968 Heritage Diver's Watch72h
Kamasu40h
Water Resistance
Prospex Marinemaster Marinemaster 1968 Heritage Diver's Watch300m
Kamasu200m
MSRP
Prospex Marinemaster Marinemaster 1968 Heritage Diver's Watch$3,600
Kamasu$375

Full specifications

Case

5 specs
Diameter
42.6mm
41.8mm
Thickness
14.1mm
12.8mm
Lug-to-Lug
49.3mm
47mm
Lug Width
20mm
22mm
Water Resistance
300m
200m

Crystal & Dial

4 specs
Crystal Shape
Curved
AR Coating
Anti-reflective coating on inner surface
Indices
Applied
Lume
LumiBrite on hands, index(es) and bezel
None

Movement

5 specs
Caliber
8L45
F6922
Beat Rate
28,800 vph
21,600 vph
Power Reserve
72h
40h
Jewels
35
22
Complications
None
Day-date

Pricing

1 specs
MSRP
$3,600
$375

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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.

Seiko Prospex Marinemaster Marinemaster 1968 Heritage Diver's Watch

The Seiko Prospex Marinemaster 1968 Heritage Diver's Watch is widely praised for its excellent quality and finishing, with reviewers and owners noting its GS-level craftsmanship and Zaratsu-inspired polishing. Owners appreciate its refined design, comfortable case shape, and the 4:00 crown position, with some finding it more manageable on the wrist than other models. The Caliber 8L45 movement offers a 72-hour power reserve and accuracy within -5/+10 seconds per day, and the bracelet features an improved clasp with an extension system. However, some find the price point high, and one reviewer noted the unsigned winding crown as a missed opportunity. On balance, owners and reviewers rate the Seiko Prospex Marinemaster 1968 Heritage Diver's Watch highly for its premium finishing and tool-like appearance at its price point.

Orient Kamasu

Owners widely praise the Orient Kamasu for its excellent value, robust build quality suitable for daily wear, and attractive design featuring applied indices and a sunburst dial. Reviewers and owners consistently highlight its strong lume, hacking and hand-winding movement, sapphire crystal, and sub-42mm dimensions. Some owners note a rattle, a crown that can be hard to grip, and a bezel with noticeable play or a tendency to become sticky. The bracelet is frequently criticized for its hollow end links and pressed clasp, though opinions on its taper vary. Accuracy figures reported by owners range from approximately +15 seconds per day to more precise timekeeping. Overall, owners rate the Orient Kamasu highly for its impressive finishing and features at its price point.

From video reviewers

The Orient Kamasu's compact package makes it suitable for smaller wrists without compromising wrist presence. A notable weakness is that the bracelet is decent but may have some issues, although the reviewer does not elaborate. Reviewers disagree on the value for money, with one highlighting the affordable price and in-house movement, while the other implies a trade-off in value.

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