Side by side

Seiko King TurtlevsGruppo Gamma Field III GMT Date

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

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 Turtle

Owners widely praise the Seiko Prospex Sea for its excellent value, robust build, and superior lume, with many appreciating its faithful recreation of classic designs and proven movements like the 4R36 and 6R15. Reviewers highlight impressive case finishing and durability, noting that even larger models wear smaller than expected due to thoughtful case design. Some owners find the solar quartz models a great entry point, appreciating their design and solar functionality. However, specific variants receive critiques: the bracelet clasp on the Samurai is described as underwhelming, and the Sumo's bracelet width and clasp are seen as too narrow and rudimentary, respectively. The SPB183 is considered expensive for a Japanese watch, and its lume is noted as not quite matching older Seiko Monster models. The GMT function on the SPB519 is deemed less practical for serious travel, and its bezel clicks are described as quieter and mushier.

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.

At a glance

12 of 29 specs differ
Diameter
King Turtle45mm
Field III GMT Date40mm
Power Reserve
King Turtle41h
Field III GMT Date41h
Water Resistance
King Turtle200m
Field III GMT Date200m
MSRP
King Turtle$650
Field III GMT Date$459

Full specifications

Case

4 specs
Category
Diver
GMT
Diameter
45mm
40mm
Thickness
13.2mm
14mm
Lug-to-Lug
47.7mm
48.5mm

Crystal & Dial

3 specs
AR Coating
Anti-reflective coating on inner surface
Yes
Dial Color
Black
Lume
LumiBrite on hands and index(es)
Super-LumiNova

Movement

4 specs
Caliber
4R36
Seiko Instruments NH38A
Power Reserve
41h
41h
Jewels
24
0
Complications
None
GMT, Date

Pricing

1 specs
MSRP
$650
$459
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