Rolex Sky-DwellervsSpinnaker Dumas GMT

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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.

Rolex Sky-Dweller at true scale

Sky-Dweller

Spinnaker Dumas GMT at true scale

Dumas GMT

Diameter

42mm

44mm

Lug-to-Lug

n/a

48mm

Thickness

n/a

15mm

Water Resistance

100m

300m

highest

Power Reserve

72h

n/a

MSRP

$17,750

$399

lowest

Movement

Rolex 9002

Seiko NH34

Case

8 specs
Diameter
42mm
44mm
Thickness
n/a
15mm
Lug-to-Lug
n/a
48mm
Lug Width
n/a
22mm
Material
Yellow Rolesor
316L Stainless Steel
Finish
White Rolesor - combination of Oystersteel and white gold
n/a
Water Resistance
100m
300m
Caseback
Monobloc middle case, screw-down case back and winding crown
n/a

Crystal & Dial

3 specs
Crystal Shape
Flat
n/a
Indices
Index
n/a
Lume
Chromalight
None

Movement

7 specs
Caliber
Rolex 9002
Seiko NH34
Beat Rate
28,800 vph
0 vph
Power Reserve
72h
0h
Jewels
40
0
Hacking
Yes
No
Hand-winding
Yes
No
Complications
GMT, Annual Calendar, Date
None

Pricing

1 specs
MSRP
$17,750
$399
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Reviews

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

Rolex Sky-Dweller

The Rolex Sky-Dweller is widely praised for its unique annual calendar and dual time zone complications, offering exceptional value and complexity. Owners consistently highlight its excellent fit and finish, with crisp dial markers and hands demonstrating irreproachable attention to detail. The 42mm case size is a point of contention, with some finding it wears smaller than expected and others deeming it too large or top-heavy for everyday wear, particularly on smaller wrists. Availability is a significant issue, with certain configurations like the green dial on Jubilee or stainless steel blue dial being extremely difficult to obtain from authorized dealers, leading to high grey market prices. Some owners view the cyclops and fluted bezel as drawbacks, while others appreciate the watch as a stunning, albeit sometimes "blingy," jewelry piece suitable for occasional wear.

From video reviewers

The Saros annual calendar and Ring Command bezel are ingenious mechanical features. The dual-time functionality is ideal for travelers. The secondary market price significantly exceeds MSRP.

Spinnaker Dumas GMT

The Spinnaker Dumas GMT is praised for its good finishing and satisfying lume, including on the crown. Owners note its 44mm case and 15mm thickness, with one finding it wears well on a 17cm wrist, while a reviewer suggests its substantial size and 209g weight make it unsuitable for smaller wrists. Overall, owners and reviewers find the Spinnaker Dumas GMT offers good value, particularly with the inclusion of an extra rubber strap.

From video reviewers

The Spinnaker Dumas GMT offers robust build quality for its price point. Reviewers noted the 300-meter water resistance.