Helicon Siebe Gorman Type D Professional DivervsSeiko Seiko 5 Sports SKX series

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Siebe Gorman Type D Professional Diver
HeliconSiebe Gorman Type D Professional Diver

Ref. siebe-gorman-type-d-professional-diver-abyss-blue-limited-edition-vip-pre-order·MSRP $746

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Seiko 5 Sports SKX series
SeikoSeiko 5 Sports SKX series

MSRP $350

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Buy from Seiko Used on eBay

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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.

Helicon Siebe Gorman Type D Professional Diver at true scale

Siebe Gorman Type D Professional Diver

Seiko Seiko 5 Sports SKX series at true scale

Seiko 5 Sports SKX series

Diameter

41mm

38mm

Lug-to-Lug

47.5mm

44.2mm

lowest

Thickness

11.9mm

lowest

12.1mm

Water Resistance

300m

highest

100m

Power Reserve

42h

highest

41h

MSRP

$746

$350

lowest

Movement

Miyota 9039

Seiko 4R36

Case

4 specs
Diameter
41mm
38mm
Thickness
11.9mm
12.1mm
Lug-to-Lug
47.5mm
44.2mm
Water Resistance
300m
100m

Crystal & Dial

3 specs
Crystal
Sapphire
Hardlex
Dial Color
n/a
n/a
Lume
None
LumiBrite on hands and index(es)

Movement

3 specs
Caliber
Miyota 9039
Seiko 4R36
Power Reserve
42h
41h
Jewels
0
24

Pricing

1 specs
MSRP
$746
$350
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