Side by side

Hamilton American Classic Boulton MechanicalvsYema Superman Worldtime GMT

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

American Classic Boulton Mechanical
HamiltonAmerican Classic Boulton Mechanical
MSRP $1,075
Superman Worldtime GMT
YemaSuperman Worldtime GMT
MSRP $1,549

At a glance

11 of 29 specs differ
Diameter
American Classic Boulton Mechanical34mm
Superman Worldtime GMT39mm
Power Reserve
American Classic Boulton Mechanical80h
Superman Worldtime GMT40h
Water Resistance
American Classic Boulton Mechanical50m
Superman Worldtime GMT300m
MSRP
American Classic Boulton Mechanical$1,075
Superman Worldtime GMT$1,549

Full specifications

Case

6 specs
Category
Dress
GMT
Diameter
34mm
39mm
Thickness
11.2mm
Lug-to-Lug
46mm
Lug Width
22mm
20mm
Water Resistance
50m
300m

Crystal & Dial

1 specs
Dial Color
White
39mm Automatic

Movement

3 specs
Caliber
H-50
Type
Manual
Automatic
Power Reserve
80h
40h

Pricing

1 specs
MSRP
$1,075
$1,549

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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.

Hamilton American Classic Boulton Mechanical

Owners widely praise the Hamilton American Classic Boulton Mechanical for its smooth winding action and hacking seconds, with the absence of a date complication being a frequently noted positive. The watch is also lauded for its cool aesthetic and interesting company heritage. Overall, owners rate the Hamilton American Classic Boulton Mechanical highly for its user-friendly mechanical movement and distinctive style.

Yema Superman Worldtime GMT

Owners widely praise the Yema Superman Worldtime GMT for its premium feel, unique bezel-lock mechanism, and attractive domed crystal. Some owners note the aluminum bezel insert is less desirable than ceramic and report the bracelet clasp can be stiff or difficult to open. Inconsistent quality control and poor customer service have been flagged by some owners. On balance, owners value the Yema Superman Worldtime GMT for its distinctive features and comfortable wearability.

From video reviewers

The "Coke" bezel and maxi dial are attractive design elements. The in-house automatic GMT movement is a French alternative to pricier GMTs.

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