Formex Reef GMTvsRolex Explorer II
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Measurements
Catalog photos are all shot at the same flattering size. These aren't: every case below shares one millimeter scale.

Reef GMT

Explorer II
Diameter
42mm
42mm
Lug-to-Lug
47mm
n/a
Thickness
11.4mm
n/a
Water Resistance
300m
highest
100m
Power Reserve
56h
70h
highest
MSRP
$2,235
lowest
$10,600
Movement
Sellita SW330-2
3285
Case
6 specsCrystal & Dial
3 specsMovement
7 specsPricing
1 specsReviews
Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.
Owners and reviewers widely praise the Formex Reef GMT for its impressive specifications and value, highlighting its unique porthole case shape and comfortable quick-release bracelet with on-the-fly micro-adjustment. The COSC-certified Sellita SW330-2 movement is noted for good finishing and reliable timekeeping, with a 56-hour power reserve. However, the watch's overall width and lug-to-lug span, particularly with male endlinks, are frequently cited as being too large for smaller wrists. Some reviewers also find the bezel action stiff and slippery, and the GMT model lacks a timing bezel option with lume. Overall, owners and reviewers rate the Formex Reef GMT highly for its robust construction and excellent specs at its price point.
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.
Owners widely praise the Rolex Explorer II for its high-contrast, legible polar dial with matte, textured finishing and its understated, classic, toolish aesthetic. Its clean lume, legibility, and ease of reading are also frequently noted. Some owners find the bracelet incredibly comfortable. Accuracy is reported as excellent, with one owner noting +/- 1 second per day. The 42mm case size is a point of contention, with some finding it too large and others appreciating its "big boy watch" suitability for everyday wear. The bezel is noted as easily scratched, and some criticize the lack of a Glidelock clasp. One owner dislikes the magnified date window for being difficult to read at angles. Overall, owners rate the Rolex Explorer II highly for its legible dial and comfortable bracelet, despite some debate over its 42mm size.
The fixed 24-hour bezel and independent GMT hand provide practical dual-time functionality. The 42mm Oystersteel case is noted for versatile wearability. Reviewers disagree on the watch's sizing, with some finding it awkward and others stating it wears well.
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