Jack Mason Strat-o-timer GMT: EspressovsRolex 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.

Jack Mason Strat-o-timer GMT: Espresso at true scale

Strat-o-timer GMT: Espresso

Rolex Sky-Dweller at true scale

Sky-Dweller

Diameter

40mm

42mm

Lug-to-Lug

47mm

n/a

Thickness

13.2mm

n/a

Water Resistance

200m

highest

100m

Power Reserve

42h

72h

highest

MSRP

$1,069

lowest

$51,400

Movement

Miyota 9075

Rolex 9002

Case

8 specs
Diameter
40mm
42mm
Thickness
13.2mm
n/a
Lug-to-Lug
47mm
n/a
Lug Width
20mm
n/a
Material
Stainless Steel
18 kt yellow gold
Finish
n/a
White Rolesor - combination of Oystersteel and white gold
Water Resistance
200m
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
n/a
Blue
Indices
n/a
Index
Lume
None
Chromalight

Movement

7 specs
Caliber
Miyota 9075
Rolex 9002
Beat Rate
0 vph
28,800 vph
Power Reserve
42h
72h
Jewels
0
40
Hacking
No
Yes
Hand-winding
No
Yes
Complications
None
GMT, Annual Calendar, Date

Pricing

1 specs
MSRP
$1,069
$51,400
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Reviews

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

Jack Mason Strat-o-timer GMT: Espresso

The Jack Mason Strat-o-timer GMT: Espresso is widely praised for its wearable 40mm case, true GMT functionality via the Miyota 9075 movement, and impressive accuracy regulated to +/-5 seconds per day. Owners are thoroughly impressed, with one noting it exceeds expectations. The watch offers 200-meter water resistance and a tool-free micro-adjustable clasp. Some reviewers note the strap ends are a bit large. Overall, owners and reviewers rate the Jack Mason Strat-o-timer GMT: Espresso highly for its excellent value and true GMT functionality at a sub-$1,000 price point.

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.

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