Side by side

Seiko Prospex SeavsTornek-Rayville Blakjak 12-hr GMT

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

Prospex Sea
SeikoProspex Sea
MSRP $1,500
Blakjak 12-hr GMT
Tornek-RayvilleBlakjak 12-hr GMT
MSRP $895

At a glance

10 of 29 specs differ
Diameter
Prospex Sea43.5mm
Blakjak 12-hr GMT42.5mm
Power Reserve
Prospex Sea70h
Blakjak 12-hr GMT42h
Water Resistance
Prospex Sea200m
Blakjak 12-hr GMT200m
MSRP
Prospex Sea$1,500
Blakjak 12-hr GMT$895

Full specifications

Case

4 specs
Diameter
43.5mm
42.5mm
Thickness
13.3mm
13.2mm
Lug-to-Lug
51mm
49mm
Material
Titanium
Stainless Steel

Crystal & Dial

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

Movement

3 specs
Caliber
6R35
SII NH36
Power Reserve
70h
42h
Jewels
24
25

Pricing

1 specs
MSRP
$1,500
$895

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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

Seiko Prospex Sea owners and reviewers praise its Marinemaster-style aesthetic, excellent case finishing, and impressive LumiBrite lume. The watch is powered by the 6R15 movement with a 50-hour power reserve and comes with both a steel bracelet and a silicone strap. Some owners find the Seiko Prospex Sea to be a great value and a suitable first "proper" watch, while others report it is uncomfortably big, thick, and heavy on smaller wrists. Reviewers note the GMT function is secondary with a less prominent scale, and the bezel's quieter clicks may not appeal to all. On balance, owners and reviewers rate the Seiko Prospex Sea highly for its classic design and finishing at its price point.

Tornek-Rayville Blakjak 12-hr GMT

The Tornek-Rayville Blakjak 12-hr GMT is a 42.5mm stainless steel watch featuring a DLC-coated bezel, sapphire crystal, and a matte black dial with 12- and 24-hour scales. It is powered by a Seiko SII NH36 automatic movement, offering a 41-hour power reserve, and boasts 200 meters of water resistance. The dial includes a day/date complication and Super-LumiNova BGW9 lume. Overall, owners and reviewers highlight its robust build and functional military-inspired design as key strengths.

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