Side by side

Sinn 544vsFormex Reef 39.5 mm

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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.

Sinn 544

The Sinn 544 is widely praised for its versatile 38.5mm size and 10mm thickness, making it suitable for daily wear. Owners and reviewers highlight its minimalist, reductionist aesthetic and robust, bead-blasted case. The 200 meters of water resistance and low-pressure resistance further contribute to its "do-anything" capability. The watch features a 4 o'clock crown and hooded lugs, a design element some find polarizing but which flows well into the bracelet. The Sinn 544 is powered by a Sellita SW200-2 movement with a 60-hour power reserve. While the fine minute track is appreciated for precise time setting, some dislike the subdivisions between the second and minute markers. One owner notes a general desire for an improved Sinn bracelet across the brand. Overall, owners and reviewers rate the Sinn 544 highly for its robust, straightforward design and practical dimensions at the price point.

From video reviewers

The Sinn 544's 38.5mm case size and 200m water resistance are noted strengths. Reviewers did not reach a consensus on any weaknesses. Reviewers did not explicitly disagree on any points.

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.

At a glance

19 of 29 specs differ
Diameter
54438.5mm
Reef 39.5 mm39.5mm
Power Reserve
54460h
Reef 39.5 mm56h
Water Resistance
544200m
Reef 39.5 mm300m
MSRP
544$1,879
Reef 39.5 mm$2,230

Full specifications

Case

8 specs
Category
Tool
Diver
Diameter
38.5mm
39.5mm
Thickness
10mm
11mm
Lug-to-Lug
45.5mm
Lug Width
20mm
22mm
Finish
bead blasted
Water Resistance
200m
300m
Caseback

Crystal & Dial

5 specs
Crystal Shape
AR Coating
Underside
Dial Color
Black
Bahama Blue
Indices
Lume
Luminescent
Super-LumiNova

Movement

5 specs
Caliber
Sellita SW200-1
Sellita SW300-1
Beat Rate
28,800 vph
0 vph
Power Reserve
60h
56h
Jewels
26
0
Complications
Date
None

Pricing

1 specs
MSRP
$1,879
$2,230
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