Side by side

Orient M-Force AC0NvsTissot Seastar 1000 Powermatic 80 GMT

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

M-Force AC0N
OrientM-Force AC0N
MSRP $555
Seastar 1000 Powermatic 80 GMT
TissotSeastar 1000 Powermatic 80 GMT
MSRP $1,375

At a glance

17 of 29 specs differ
Diameter
M-Force AC0N45mm
Seastar 1000 Powermatic 80 GMT46mm
Power Reserve
M-Force AC0N40h
Seastar 1000 Powermatic 80 GMT80h
Water Resistance
M-Force AC0N200m
Seastar 1000 Powermatic 80 GMT300m
MSRP
M-Force AC0N$555
Seastar 1000 Powermatic 80 GMT$1,375

Full specifications

Case

6 specs
Category
Diver
GMT
Diameter
45mm
46mm
Thickness
12.8mm
15.4mm
Lug-to-Lug
52mm
46mm
Lug Width
20mm
22mm
Water Resistance
200m
300m

Crystal & Dial

5 specs
Crystal Shape
Domed
AR Coating
Underside
Yes
Dial Color
Green
Black
Indices
Indexes
Lume
None
Super-LumiNova ®

Movement

5 specs
Caliber
F6727
Powermatic 80
Beat Rate
21,600 vph
28,800 vph
Power Reserve
40h
80h
Jewels
22
25
Complications
Date
None

Pricing

1 specs
MSRP
$555
$1,375

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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.

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.

Tissot Seastar 1000 Powermatic 80 GMT

Owners widely praise the Tissot Seastar 1000 Powermatic 80 GMT for its excellent build quality, smooth winding feel, and the reliable Powermatic 80 movement providing an 80-hour power reserve. Reviewers highlight its remarkable value under $700, comfortable wearability, and appealing case/dial ratio. Some owners note the bezel's functionality for tracking a second time zone and the need to adjust the hour hand for date setting, a characteristic of its "True" GMT function. The rubber strap is considered comparable to those found on significantly more expensive watches. However, concerns exist regarding the movement's serviceability due to potential plastic components and reliance on Swatch Group service centers. Some find the bezel font and dial spacing unappealing, while others question the mineral glass bezel insert as a cost-cutting measure compared to ceramic. Accuracy is generally reported as good, though not COSC certified, and lume intensity is described as average by one owner.

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