Side by side

Formex Reef GMTvsNOMOS Glashütte Tangomat ruthenium

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

Reef GMT
FormexReef GMT
MSRP $2,235
Tangomat ruthenium
NOMOS GlashütteTangomat ruthenium
MSRP $3,700

At a glance

17 of 29 specs differ
Diameter
Reef GMT42mm
Tangomat ruthenium38.3mm
Power Reserve
Reef GMT56h
Tangomat ruthenium43 hoursh
Water Resistance
Reef GMT300m
Tangomat ruthenium30m
MSRP
Reef GMT$2,235
Tangomat ruthenium$3,700

Full specifications

Case

8 specs
Category
GMT
Dress
Diameter
42mm
38.3mm
Thickness
11.4mm
8.3mm
Lug-to-Lug
47mm
48mm
Lug Width
22mm
20mm
Finish
Brushed and polished
Water Resistance
300m
30m
Caseback
Solid

Crystal & Dial

4 specs
Crystal Shape
Flat
AR Coating
Inner
Indices
Applied
Lume
Super-LumiNova
None

Movement

4 specs
Caliber
Sellita SW330-2
DUW 5001
Beat Rate
28,800 vph
21,600 vph
Power Reserve
56h
43 hoursh
Jewels
25
26

Pricing

1 specs
MSRP
$2,235
$3,700

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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.

NOMOS Glashütte Tangomat ruthenium

Owners widely praise the NOMOS Glashütte Tangomat ruthenium for its Glashütte watchmaking and Bauhaus design, with one owner noting accuracy at +2 seconds/day and a 43-hour power reserve. Some owners find the Tangomat thicker than other models, with case proportions that may not suit its sharp design, and one owner expressed a preference for newer movements over the older Epsilon automatic. Overall, owners value the NOMOS Glashütte Tangomat ruthenium for its precise timekeeping and design ethos.

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