Side by side

Grand Seiko SBGN027vsTornek-Rayville Blakjak 12-hr GMT

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

SBGN027
Grand SeikoSBGN027
MSRP $3,700
Blakjak 12-hr GMT
Tornek-RayvilleBlakjak 12-hr GMT
MSRP $895

At a glance

10 of 29 specs differ
Diameter
SBGN02739mm
Blakjak 12-hr GMT42.5mm
Power Reserve
SBGN02740h
Blakjak 12-hr GMT42h
Water Resistance
SBGN027200m
Blakjak 12-hr GMT200m
MSRP
SBGN027$3,700
Blakjak 12-hr GMT$895

Full specifications

Case

5 specs
Category
GMT
Diver
Diameter
39mm
42.5mm
Thickness
12.3mm
13.2mm
Lug-to-Lug
45.9mm
49mm
Lug Width
19mm
22mm

Crystal & Dial

1 specs
Lume
None
Superluminova

Movement

3 specs
Caliber
9F86
SII NH36
Type
Quartz
Automatic
Power Reserve
40h
42h

Pricing

1 specs
MSRP
$3,700
$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.

Grand Seiko SBGN027

Owners widely praise the Grand Seiko SBGN027 for its exceptional Zaratsu polishing, compact 39mm size, and versatile monochrome aesthetic, noting its thin profile and suitability as a grab-and-go watch. The 9F quartz movement delivers highly accurate timekeeping, with one owner reporting +/- 10 seconds per year. However, some find the lume limited, the bracelet lacks micro-adjustments, and the GMT hand can be easily mistaken for the minute hand. One owner reported a black index on the bezel disappearing after a couple of months. On balance, owners rate the Grand Seiko SBGN027 highly for its premium finishing and accurate HAQ GMT movement in a wearable size.

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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