Side by side

Maen Mahjong 36vsFormex Reef GMT

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

Mahjong 36
MaenMahjong 36
MSRP $899
Reef GMT
FormexReef GMT
MSRP $2,235

At a glance

13 of 29 specs differ
Diameter
Mahjong 3636mm
Reef GMT42mm
Power Reserve
Mahjong 3640h
Reef GMT56h
Water Resistance
Mahjong 3650m
Reef GMT300m
MSRP
Mahjong 36$899
Reef GMT$2,235

Full specifications

Case

7 specs
Category
Dress
GMT
Diameter
36mm
42mm
Thickness
11.1mm
11.4mm
Lug-to-Lug
47mm
Lug Width
22mm
Material
316L Stainless Steel
Stainless Steel
Water Resistance
50m
300m

Crystal & Dial

3 specs
Crystal
Domed Sapphire
Sapphire
Dial Color
MHV.03
Black
Lume
None
Super-LumiNova

Movement

2 specs
Caliber
Miyota 9122
Sellita SW330-2
Power Reserve
40h
56h

Pricing

1 specs
MSRP
$899
$2,235

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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.

Maen Mahjong 36

Owners widely appreciate the Maen Mahjong 36 for its quality and wearability, with some finding the green sunburst dial a subtle and fitting homage to its theme and the price reasonable. However, a segment of the community finds the design too understated for its thematic inspiration, preferring a more pronounced lacquered dial. On balance, owners rate the Maen Mahjong 36 highly for its impressive quality and wearability at its price point.

Formex Reef GMT

The Formex Reef GMT is widely praised for its unique porthole case shape, COSC-certified Sellita SW330-2 movement with good finishing, and comfortable quick-release bracelet with on-the-fly micro-adjustment. Reviewers note its robust construction, impressive specifications, and strong value proposition, with a slim 11.4mm profile accommodating 300m water resistance and an exhibition caseback. However, owners widely report the 53mm lug-to-lug span with male endlinks makes it too large for smaller wrists. Some find the bezel action stiff and potentially slippery, and a reviewer desired sharper finishing and edges, deeming the aesthetic too modernist. The GMT variant sacrifices a timing bezel unless swapped, and one owner notes sharp edges on the crown and crown guard. Overall, owners and reviewers highly rate the Formex Reef GMT for its exceptional value and well-executed features, particularly its bracelet system and COSC-certified movement.

From video reviewers

The watch features a COSC-certified SW330-2 GMT movement, which is visible through a sapphire crystal display case back and beautifully decorated. The watch's water-resistance of up to 300m/1000ft is a notable feature. The 42mm diameter may be too large for smaller wrists.

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