Side by side

Seiko Prospex Marinemaster Marinemaster 1968 Heritage Diver's WatchvsLorier Hydra SIII

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

Hydra SIII
LorierHydra SIII
MSRP $699

At a glance

12 of 29 specs differ
Diameter
Prospex Marinemaster Marinemaster 1968 Heritage Diver's Watch42.6mm
Hydra SIII39mm
Power Reserve
Prospex Marinemaster Marinemaster 1968 Heritage Diver's Watch72h
Hydra SIII40h
Water Resistance
Prospex Marinemaster Marinemaster 1968 Heritage Diver's Watch300m
Hydra SIII200m
MSRP
Prospex Marinemaster Marinemaster 1968 Heritage Diver's Watch$3,600
Hydra SIII$699

Full specifications

Case

4 specs
Diameter
42.6mm
39mm
Thickness
14.1mm
Lug-to-Lug
49.3mm
Water Resistance
300m
200m

Crystal & Dial

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

Movement

3 specs
Caliber
8L45
Power Reserve
72h
40h
Jewels
35
25

Pricing

1 specs
MSRP
$3,600
$699

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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.

Lorier Hydra SIII

Owners and reviewers praise the Lorier Hydra SIII for its value, GMT functionality via the Miyota 9075 movement, and classic travel-diver aesthetics. Some reviewers note the finishing is simple or a tad rough around the edges, while others find it good for the price. Accuracy figures range from +7 to +8.5 seconds per day. The domed Hesalite crystal may exhibit distortion. Overall, owners and reviewers rate the Lorier Hydra SIII highly for its feature set and value proposition in a travel-diver format.

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