Formex Reef GMTvsRolex Sky-Dweller

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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.

Formex Reef GMT at true scale

Reef GMT

Rolex Sky-Dweller at true scale

Sky-Dweller

Diameter

42mm

42mm

Lug-to-Lug

47mm

n/a

Thickness

11.4mm

n/a

Water Resistance

300m

highest

100m

Power Reserve

56h

72h

highest

MSRP

$2,235

lowest

$51,400

Movement

Sellita SW330-2

Rolex 9002

Case

7 specs
Thickness
11.4mm
n/a
Lug-to-Lug
47mm
n/a
Lug Width
22mm
n/a
Material
Stainless Steel
18 kt yellow gold
Finish
n/a
White Rolesor - combination of Oystersteel and white gold
Water Resistance
300m
100m
Caseback
n/a
Monobloc middle case, screw-down case back and winding crown

Crystal & Dial

4 specs
Crystal Shape
n/a
Flat
Dial Color
Black
Blue
Indices
n/a
Index
Lume
Super-LumiNova
Chromalight

Movement

7 specs
Caliber
Sellita SW330-2
Rolex 9002
Beat Rate
0 vph
28,800 vph
Power Reserve
56h
72h
Jewels
0
40
Hacking
No
Yes
Hand-winding
No
Yes
Complications
None
GMT, Annual Calendar, Date

Pricing

1 specs
MSRP
$2,235
$51,400
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Reviews

Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.

Formex Reef GMT

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.

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.

Rolex Sky-Dweller

Owners widely praise the Rolex Sky-Dweller for its exceptionally good fit and finish, irreproachable attention to detail, and unique, well-executed annual calendar and dual-time zone complications, with many considering it Rolex's most complicated watch and a great value. Some owners find the 42mm case too large or top-heavy, particularly on smaller wrists, while others report it wears surprisingly well. Availability from authorized dealers is a significant issue, with long wait times for popular configurations. On balance, owners rate the Rolex Sky-Dweller highly for its unique complications and build quality, despite some reservations about its size.