Side by side

Sternglas BerlinvsFormex Reef 39.5 mm

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

Berlin
SternglasBerlin
MSRP $258
Reef 39.5 mm
FormexReef 39.5 mm
MSRP $2,230

At a glance

13 of 29 specs differ
Diameter
Berlin38mm
Reef 39.5 mm39.5mm
Power Reserve
Berlin
Reef 39.5 mm56h
Water Resistance
Berlin50m
Reef 39.5 mm300m
MSRP
Berlin$258
Reef 39.5 mm$2,230

Full specifications

Case

6 specs
Category
Dress
Diver
Diameter
38mm
39.5mm
Thickness
8mm
11mm
Lug-to-Lug
45mm
45.5mm
Lug Width
20mm
22mm
Water Resistance
50m
300m

Crystal & Dial

2 specs
Dial Color
Bahama Blue
Lume
None
Super-LumiNova

Movement

4 specs
Caliber
Miyota GM02
Sellita SW300-1
Type
Quartz
Automatic
Power Reserve
56h
Jewels
25

Pricing

1 specs
MSRP
$258
$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 Berlin

The Sternglas Berlin is praised for its stylish Art Deco-inspired design and slim 38mm case, offering good value at $270 for newcomers to watches. One reviewer notes the Miyota GM02 quartz movement is accurate to ±20 seconds per month, but flags the included leather strap as squeaky and suggests an alternative. Overall, owners find the Sternglas Berlin a satisfying purchase for its aesthetic and 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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