Side by side

Orient M-Force AC0NvsGruppo 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.

Orient M-Force AC0N

Owners widely praise the Orient M-Force AC0N for its rugged, tank-like appearance and robust, well-built construction, with many citing the reliability of Japanese automatic movements as a key draw. Reviewers and owners consistently flag excellent lume and a superior diver bezel, though one owner notes poor low-light legibility due to weak lume. Accuracy figures vary, with one owner reporting stable +12 seconds/day timekeeping while another found it kept near-perfect time when fully wound; a wobbly crown was also noted by one owner. Overall, owners rate the Orient M-Force AC0N highly for its toughness and value, with its striking design and durable build being the primary reasons for satisfaction.

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

16 of 29 specs differ
Diameter
M-Force AC0N45mm
Field III GMT Date40mm
Power Reserve
M-Force AC0N40h
Field III GMT Date41h
Water Resistance
M-Force AC0N200m
Field III GMT Date200m
MSRP
M-Force AC0N$555
Field III GMT Date$459

Full specifications

Case

5 specs
Category
Diver
GMT
Diameter
45mm
40mm
Thickness
12.8mm
14mm
Lug-to-Lug
52mm
48.5mm
Lug Width
20mm
22mm

Crystal & Dial

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

Movement

5 specs
Caliber
F6727
Seiko Instruments NH38A
Beat Rate
21,600 vph
28,800 vph
Power Reserve
40h
41h
Jewels
22
25
Complications
Date
GMT, Date

Pricing

1 specs
MSRP
$555
$459
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