Side by side

Tornek-Rayville Blakjak 12-hr GMTvsYema Wristmaster Slim CMM.20

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

Blakjak 12-hr GMT
Tornek-RayvilleBlakjak 12-hr GMT
MSRP $895
Wristmaster Slim CMM.20
YemaWristmaster Slim CMM.20
MSRP $2,117

At a glance

12 of 29 specs differ
Diameter
Blakjak 12-hr GMT42.5mm
Wristmaster Slim CMM.2039mm
Power Reserve
Blakjak 12-hr GMT42h
Wristmaster Slim CMM.2040h
Water Resistance
Blakjak 12-hr GMT200m
Wristmaster Slim CMM.20100m
MSRP
Blakjak 12-hr GMT$895
Wristmaster Slim CMM.20$2,117

Full specifications

Case

7 specs
Category
Diver
GMT
Diameter
42.5mm
39mm
Thickness
13.2mm
9mm
Lug-to-Lug
49mm
Lug Width
22mm
24mm
Material
Stainless Steel
316L Stainless Steel
Water Resistance
200m
100m

Crystal & Dial

2 specs
AR Coating
Yes
Inner
Lume
Superluminova
None

Movement

2 specs
Caliber
SII NH36
Yema CMM.20
Power Reserve
42h
40h

Pricing

1 specs
MSRP
$895
$2,117

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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.

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.

Yema Wristmaster Slim CMM.20

The Yema Wristmaster Slim CMM.20 is widely praised for its compelling integrated bracelet design and comfortable 39mm wearability. Reviewers highlight its impressive value, featuring an in-house CMM.20 micro-rotor movement with a 70-hour power reserve, adjusted to -3/+7 seconds per day, all within a slim 9mm case. Some note the domed sapphire crystal can produce glare and the dial text is quite small. On balance, reviewers rate the Yema Wristmaster Slim CMM.20 highly for its integrated design and value proposition with a micro-rotor movement.

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