Side by side

Boldr Globetrotter GMTvsSinn U18

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

Globetrotter GMT
BoldrGlobetrotter GMT
MSRP $469
U18
SinnU18
MSRP $3,488
What people say

Owners + reviewers, side by side

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

Boldr Globetrotter GMT

The Boldr Globetrotter GMT is praised for its legibility and finishing, featuring applied Super-LumiNova indices and sword hands on a matte black or sunburst blue dial. Reviewers highlight the ceramic bezel's sharp city markings and tight, smooth ratcheting action. The 44mm 316L stainless steel case exhibits a non-traditional design with radial and vertical brushing.

Sinn U18

The Sinn U18 is praised for its unique deep blue/green dial with three-dimensional oxygen bubbles that change with light, and its comfortable, easily adjustable bracelet. Owners find the watch stunning and a piece of history, appreciating the refined hands. The Sinn U18 features a 44mm, 15.5mm thick case made from German submarine steel, offering a 2000-meter dive specification and Sinn's Ar-Dehumidifying technology, powered by a Sellita SW300-1 movement. The case thickness is apparent, and the watch comes as a complete set with box and papers for $3,000-$3,680. On balance, owners and reviewers rate the Sinn U18 highly for its striking dial and robust build.

At a glance

17 of 29 specs differ
Diameter
Globetrotter GMT40mm
U1844mm
Power Reserve
Globetrotter GMT40h
U1842h
Water Resistance
Globetrotter GMT200m
U182,000m
MSRP
Globetrotter GMT$469
U18$3,488

Full specifications

Case

9 specs
Category
GMT
Diver
Diameter
40mm
44mm
Thickness
12.7mm
15.5mm
Lug-to-Lug
48mm
Lug Width
20mm
22mm
Material
Stainless Steel
high-strength
Finish
Brushed and polished
Water Resistance
200m
2000m
Caseback
Solid

Crystal & Dial

5 specs
Crystal Shape
Flat
AR Coating
Yes
Dial Color
GMT Banff
Black
Indices
Applied
Lume
Super-LumiNova
None

Movement

2 specs
Caliber
Seiko NH34 GMT
SW300-1
Power Reserve
40h
42h

Pricing

1 specs
MSRP
$469
$3,488
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