Side by side

Helicon Professional ChronographvsSpinnaker Dumas GMT

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

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Professional Chronograph
HeliconProfessional Chronograph
MSRP $550
See the full Professional Chronograph
Dumas GMT
SpinnakerDumas GMT
MSRP $399
See the full Dumas GMT
Buy from Helicon ↗
Buy used on eBay ↗
Buy from Spinnaker ↗
Buy used on eBay ↗

At a glance

12 of 29 specs differ
Diameter
Professional Chronograph41mm
Dumas GMT44mm
Power Reserve
Professional Chronograph—
Dumas GMT—
Water Resistance
Professional Chronograph100m
Dumas GMT300m
MSRP
Professional Chronograph$550
Dumas GMT$399

Full specifications

Case

7 specs
Category
—
GMT
Diameter
41mm
44mm
Thickness
11.95mm
15mm
Lug-to-Lug
47.5mm
48mm
Lug Width
20mm
22mm
Material
Stainless Steel
316L Stainless Steel
Water Resistance
100m
300m

Crystal & Dial

1 specs
Dial Color
Graphene Grey
Blue

Movement

3 specs
Caliber
—
Seiko NH34
Type
Quartz
Automatic
Power Reserve
—
0h

Pricing

1 specs
MSRP
$550
$399
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