Side by side

Seiko King Seiko KSKvsGruppo Gamma Field III GMT Date

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

King Seiko KSK
SeikoKing Seiko KSK
MSRP $2,000
Field III GMT Date
Gruppo GammaField III GMT Date
MSRP $459

At a glance

14 of 29 specs differ
Diameter
King Seiko KSK38.3mm
Field III GMT Date40mm
Power Reserve
King Seiko KSK72h
Field III GMT Date41h
Water Resistance
King Seiko KSK100m
Field III GMT Date200m
MSRP
King Seiko KSK$2,000
Field III GMT Date$459

Full specifications

Case

6 specs
Category
Dress
GMT
Diameter
38.3mm
40mm
Thickness
11.7mm
14mm
Lug-to-Lug
46mm
48.5mm
Lug Width
19mm
22mm
Water Resistance
100m
200m

Crystal & Dial

3 specs
Crystal Shape
Box
Flat
AR Coating
Anti-reflective coating on inner surface
Yes
Lume
LumiBrite on Hands
Super-LumiNova

Movement

4 specs
Caliber
6R55
Seiko Instruments NH38A
Power Reserve
72h
41h
Jewels
24
25
Complications
None
GMT, Date

Pricing

1 specs
MSRP
$2,000
$459

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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.

Seiko King Seiko KSK

Owners and reviewers widely praise the King Seiko KSK's sharp, faceted case design and harmonious mid-century aesthetic. Its compact 38.1mm or 37mm size and slim 10.7mm thickness are noted as highly wearable. However, accuracy is a point of contention, with one reviewer reporting a wide range of +25 to -15 seconds per day for the 6R31 movement, while others criticize the standard 6R movement as too thick and a departure from the brand's history. Water resistance is consistently cited as limited to 50 meters, and one owner reported misaligned screws on the caseback and clasp. On balance, owners and reviewers find the King Seiko KSK appealing for its design and wearability, though the movement choice and accuracy are significant drawbacks for some.

Gruppo Gamma Field III GMT Date

Owners widely praise the Gruppo Gamma Field III GMT Date for its awesome looks, quality, and good value. The watch features a 40mm brushed 316L stainless steel case, box sapphire crystal, and 200m water resistance, powered by a Seiko NH34A movement. Some reviewers note the NH34A movement's accuracy can range from -20~+40 seconds per day, though one reviewer reported +5 seconds per day with a regulated movement. The dial's dense layout with Arabic numerals can be overwhelming for some, and one owner found the size unsuitable for smaller wrists. On balance, owners rate the Gruppo Gamma Field III GMT Date highly for its impressive finishing and toolish design at its price point.

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