Side by side

Maen Skymaster 38 MKIIIvsFormex Reef GMT

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

Skymaster 38 MKIII
MaenSkymaster 38 MKIII
MSRP $1,679
Reef GMT
FormexReef GMT
MSRP $2,235

At a glance

13 of 29 specs differ
Diameter
Skymaster 38 MKIII38mm
Reef GMT42mm
Power Reserve
Skymaster 38 MKIII40h
Reef GMT56h
Water Resistance
Skymaster 38 MKIII100m
Reef GMT300m
MSRP
Skymaster 38 MKIII$1,679
Reef GMT$2,235

Full specifications

Case

7 specs
Category
Chronograph
GMT
Diameter
38mm
42mm
Thickness
13.4mm
11.4mm
Lug-to-Lug
47mm
Lug Width
22mm
Material
316L Stainless Steel
Stainless Steel
Water Resistance
100m
300m

Crystal & Dial

3 specs
Crystal
Domed Sapphire
Sapphire
Dial Color
M6.1.1
Black
Lume
None
Super-LumiNova

Movement

2 specs
Caliber
Sellita SW510mb
Sellita SW330-2
Power Reserve
40h
56h

Pricing

1 specs
MSRP
$1,679
$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 Skymaster 38 MKIII

The Maen Skymaster 38 MKIII is praised for its refined case, impressive fit and finish, and compact 38mm size, which offers a premium feel with a sharp, legible dial and well-executed applied markers. Reviewers note the sweet winding action and the vintage-inspired brown sunburst dial with dauphine hands and lollipop register pointers. The watch is powered by a manual-wind Sellita SW510Mb movement with a 63-hour power reserve. Accuracy figures vary, with one reviewer reporting +7 seconds per day and another stating a tolerance of +/-15 seconds per day. On balance, owners and reviewers appreciate the Maen Skymaster 38 MKIII for its refined vintage-inspired design and compact dimensions at its price point.

From video reviewers

The 38mm case size is a key strength for the Maen Skymaster 38 MKIII. Reviewers noted the excellent quality-price ratio for a Swiss-made chronograph.

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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