Side by side

Formex Reef 39.5 mmvsHorage Revolution 3 MicroReg

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

Reef 39.5 mm
FormexReef 39.5 mm
MSRP $2,230
Revolution 3 MicroReg
HorageRevolution 3 MicroReg
MSRP $5,320

At a glance

10 of 29 specs differ
Diameter
Reef 39.5 mm39.5mm
Revolution 3 MicroReg41mm
Power Reserve
Reef 39.5 mm56h
Revolution 3 MicroReg72h
Water Resistance
Reef 39.5 mm300m
Revolution 3 MicroReg100m
MSRP
Reef 39.5 mm$2,230
Revolution 3 MicroReg$5,320

Full specifications

Case

5 specs
Category
Diver
Dress
Diameter
39.5mm
41mm
Thickness
11mm
10.05mm
Lug-to-Lug
45.5mm
48.22mm
Water Resistance
300m
100m

Crystal & Dial

2 specs
AR Coating
Inner
No
Dial Color
Bahama Blue
Black

Movement

2 specs
Caliber
Sellita SW300-1
Horage K2
Power Reserve
56h
72h

Pricing

1 specs
MSRP
$2,230
$5,320

Follow this matchup

Get a note when Formex Reef 39.5 mm vs Horage Revolution 3 MicroReg gets more votes, a community discussion, or a price drop. No account needed.

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 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.

Horage Revolution 3 MicroReg

The Horage Revolution 3 MicroReg showcases an innovative external micro-adjustment system for on-the-fly regulation via electromagnetic pulse, a remarkable feat of micro-engineering. This proof-of-concept prototype is still in early development, with a projected launch in late summer 2026 and a founder's price of CHF 3,900. On balance, reviewers highlight the revolutionary regulation technology as the defining characteristic of the Horage Revolution 3 MicroReg.

Keep exploring

More watches worth a look

Matched to the watches above on size, movement, style and price — microbrands first. Open any one to dig in.

Adjacent matchups

People also compared

Comparisons nearby in the catalog — alternatives to the watches above paired against the matchup.