Side by side

Sternglas Marus 2.0vsFormex Reef 39.5 mm

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

Marus 2.0
SternglasMarus 2.0
MSRP $593
Reef 39.5 mm
FormexReef 39.5 mm
MSRP $2,230

At a glance

11 of 29 specs differ
Diameter
Marus 2.041mm
Reef 39.5 mm39.5mm
Power Reserve
Marus 2.041h
Reef 39.5 mm56h
Water Resistance
Marus 2.0200m
Reef 39.5 mm300m
MSRP
Marus 2.0$593
Reef 39.5 mm$2,230

Full specifications

Case

5 specs
Diameter
41mm
39.5mm
Thickness
14mm
11mm
Lug-to-Lug
49mm
45.5mm
Lug Width
20mm
22mm
Water Resistance
200m
300m

Crystal & Dial

2 specs
Dial Color
Bahama Blue
Lume
Luminova
Super-LumiNova

Movement

3 specs
Caliber
Seiko TMI NH35
Sellita SW300-1
Power Reserve
41h
56h
Jewels
25

Pricing

1 specs
MSRP
$593
$2,230

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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.

Sternglas Marus 2.0

Owners widely praise the Sternglas Marus 2.0 for its well-built, heavy case and excellent bezel action, which is considered superior to some competitors. Reviewers note the refined case and luminous dial markers, while the green dial stands out from other divers. The Seiko NH35A movement offers accuracy ranging from -20/+40 seconds per day. One reviewer desired a slightly larger screw-down crown. Overall, owners and reviewers rate the Sternglas Marus 2.0 highly for its robust build and standout dial at its price point.

Formex Reef 39.5 mm

The Formex Reef 39.5 mm is widely praised for its refined finishing, comfortable and well-proportioned case design, and impressive specifications for its price point, including COSC-certified Sellita SW300-1 movement and 300m water resistance. Owners and reviewers highlight the tool-less micro-adjust clasp and quick-release spring bars as practical features. Some reviewers note that the 22mm lug width feels slightly disproportionate to the smaller case, and the bracelet could benefit from more taper, though this is a point of contention for some owners who value the overall package. A prototype crown protrusion issue is noted as being addressed for production. On balance, owners and reviewers rate the Formex Reef 39.5 mm highly for its excellent value and well-executed design.

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