Side by side

Formex Reef GMTvsTissot Seastar 1000

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

Reef GMT
FormexReef GMT
MSRP $2,235
Seastar 1000
TissotSeastar 1000
MSRP $515

At a glance

13 of 29 specs differ
Diameter
Reef GMT42mm
Seastar 100036mm
Power Reserve
Reef GMT56h
Seastar 100040h
Water Resistance
Reef GMT300m
Seastar 1000300m
MSRP
Reef GMT$2,235
Seastar 1000$515

Full specifications

Case

5 specs
Category
GMT
Diver
Diameter
42mm
36mm
Thickness
11.4mm
9.67mm
Lug-to-Lug
47mm
36mm
Lug Width
22mm
18mm

Crystal & Dial

4 specs
AR Coating
Inner
Yes
Dial Color
Black
White
Indices
Applied
Indexes
Lume
Super-LumiNova
Super-LumiNova ®

Movement

3 specs
Caliber
Sellita SW330-2
Type
Automatic
Quartz
Power Reserve
56h
40h

Pricing

1 specs
MSRP
$2,235
$515

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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.

Formex Reef GMT

The Formex Reef GMT is widely praised for its unique porthole case shape, COSC-certified Sellita SW330-2 movement with good finishing, and comfortable quick-release bracelet with on-the-fly micro-adjustment. Reviewers note its robust construction, impressive specifications, and strong value proposition, with a slim 11.4mm profile accommodating 300m water resistance and an exhibition caseback. However, owners widely report the 53mm lug-to-lug span with male endlinks makes it too large for smaller wrists. Some find the bezel action stiff and potentially slippery, and a reviewer desired sharper finishing and edges, deeming the aesthetic too modernist. The GMT variant sacrifices a timing bezel unless swapped, and one owner notes sharp edges on the crown and crown guard. Overall, owners and reviewers highly rate the Formex Reef GMT for its exceptional value and well-executed features, particularly its bracelet system and COSC-certified movement.

From video reviewers

The watch features a COSC-certified SW330-2 GMT movement, which is visible through a sapphire crystal display case back and beautifully decorated. The watch's water-resistance of up to 300m/1000ft is a notable feature. The 42mm diameter may be too large for smaller wrists.

Tissot Seastar 1000

Owners widely praise the Tissot Seastar 1000 for its 300m water resistance, 80-hour power reserve, and Swiss movement at its price point, with some highlighting its comfortable, sporty feel and great case/dial ratio. However, community members are split on its proportions, with some finding the indices small and the hands and bezel ill-proportioned, while others note the quartz models offer good value with solid build. The lume is described as unremarkable and not long-lasting, and the bracelet clasp on quartz models is considered flimsy by one owner. On balance, owners and reviewers appreciate the Tissot Seastar 1000 for its robust specifications and value, particularly its impressive water resistance and power reserve.

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