Side by side

Seiko Prospex SeavsTornek-Rayville TR-660 Sapphire Non-date

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

Prospex Sea
SeikoProspex Sea
TR-660 Sapphire Non-date
Tornek-RayvilleTR-660 Sapphire Non-date

At a glance

10 of 29 specs differ
Diameter
Prospex Sea42mm
TR-660 Sapphire Non-date40mm
Power Reserve
Prospex Sea72h
TR-660 Sapphire Non-date50h
Water Resistance
Prospex Sea300m
TR-660 Sapphire Non-date200m
MSRP
Prospex Sea
TR-660 Sapphire Non-date

Full specifications

Case

4 specs
Diameter
42mm
40mm
Thickness
13.3mm
14.7mm
Lug-to-Lug
48.6mm
48.5mm
Water Resistance
300m
200m

Crystal & Dial

2 specs
AR Coating
Anti-reflective coating on inner surface
Yes
Lume
LumiBrite on hands, index(es) and bezel
Superluminova

Movement

3 specs
Caliber
6R54
TMI NH38
Power Reserve
72h
50h
Jewels
24
25

Pricing

1 specs
MSRP

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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 Sea

Owners widely praise the Seiko Prospex Sea for its excellent value, solid build, and comfortable wearability, with specific mentions of its matte black dial, excellent lume, and cushion case that wears smaller than its dimensions suggest. The 4R36 movement is noted for hacking and hand-winding capabilities, and the bezel action is described as smooth and precise. Some owners find the watch to be a legitimate tool with a fair price, while others describe it as big, thick, and heavy, uncomfortable for smaller wrists, though this is subjective as one owner found the size perfect. The solar quartz movement is also highlighted as a collection-worthy feature. On balance, owners and reviewers rate the Seiko Prospex Sea highly for its exceptional value and comfortable, classic design.

Tornek-Rayville TR-660 Sapphire Non-date

Owners widely praise the Tornek-Rayville TR-660 for its quality, good timekeeping, and suitability as a military diver reissue. The 40mm bead-blasted 316L stainless steel case, sapphire bezel inlay, and Arclite Super LumiNova are noted features, powered by a Japanese TMI NH38 automatic movement and water-resistant to 20 ATMs. Some owners suggest alternatives due to availability issues with the small-batch releases. Overall, owners rate the Tornek-Rayville TR-660 highly for its faithful reissue design and quality build at its price point.

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