Side by side

Sternglas Hamburg AutomatikvsFormex Reef 39.5 mm

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

Hamburg Automatik
SternglasHamburg Automatik
MSRP $463
Reef 39.5 mm
FormexReef 39.5 mm
MSRP $2,230

At a glance

12 of 29 specs differ
Diameter
Hamburg Automatik42mm
Reef 39.5 mm39.5mm
Power Reserve
Hamburg Automatik42h
Reef 39.5 mm56h
Water Resistance
Hamburg Automatik50m
Reef 39.5 mm300m
MSRP
Hamburg Automatik$463
Reef 39.5 mm$2,230

Full specifications

Case

6 specs
Category
Sport
Diver
Diameter
42mm
39.5mm
Thickness
12mm
11mm
Lug-to-Lug
45mm
45.5mm
Lug Width
20mm
22mm
Water Resistance
50m
300m

Crystal & Dial

2 specs
Dial Color
Bahama Blue
Lume
Luminova
Super-LumiNova

Movement

3 specs
Caliber
Miyota 8215
Sellita SW300-1
Power Reserve
42h
56h
Jewels
25

Pricing

1 specs
MSRP
$463
$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 Hamburg Automatik

Owners praise the Sternglas Hamburg Automatik's handsome design and good build quality for the price. The watch features a gold PVD case and a matte blue dial with orange Super-LumiNova, and its 42mm diameter wears well due to a short lug-to-lug distance. The Miyota 8215 movement is accurate to -20/+40 seconds per day. On balance, reviewers and owners appreciate the Sternglas Hamburg Automatik for its unique design and value.

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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