Side by side

Formex Reef GMTvsYema Superman Worldtime GMT

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

Reef GMT
FormexReef GMT
MSRP $2,235
Superman Worldtime GMT
YemaSuperman Worldtime GMT
MSRP $1,549

At a glance

9 of 29 specs differ
Diameter
Reef GMT42mm
Superman Worldtime GMT39mm
Power Reserve
Reef GMT56h
Superman Worldtime GMT40h
Water Resistance
Reef GMT300m
Superman Worldtime GMT300m
MSRP
Reef GMT$2,235
Superman Worldtime GMT$1,549

Full specifications

Case

4 specs
Diameter
42mm
39mm
Thickness
11.4mm
Lug-to-Lug
47mm
Lug Width
22mm
20mm

Crystal & Dial

2 specs
Dial Color
Black
39mm Automatic
Lume
Super-LumiNova
None

Movement

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

Pricing

1 specs
MSRP
$2,235
$1,549

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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.

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.

Yema Superman Worldtime GMT

Owners widely praise the Yema Superman Worldtime GMT for its premium feel, unique bezel-lock mechanism, and attractive domed crystal. Some owners note the aluminum bezel insert is less desirable than ceramic and report the bracelet clasp can be stiff or difficult to open. Inconsistent quality control and poor customer service have been flagged by some owners. On balance, owners value the Yema Superman Worldtime GMT for its distinctive features and comfortable wearability.

From video reviewers

The "Coke" bezel and maxi dial are attractive design elements. The in-house automatic GMT movement is a French alternative to pricier GMTs.

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