Side by side

Sinn 556 I WTvsFormex Reef 42 mm

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

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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 556 I WT

The Sinn 556 I WT is seen as a good value, though some owners find its stark black dial and white markers visually flat compared to more textured dials. While its minimalist design, screw-down crown, and water resistance are praised, some find the two-dimensional dial lacks visual substance. Overall, owners rate the Sinn 556 I WT well for its value and solid specifications, despite some finding its austere dial design polarizing.

From video reviewers

The stark white dial offers excellent legibility. Lume application on the hands was inconsistent.

Formex Reef 42 mm

The Formex Reef 42 mm is widely praised for its comfortable bracelet featuring a micro-adjust clasp, COSC-certified Sellita movement, and excellent build quality. Owners appreciate the gradient dial's visual appeal and the overall wearability. Some owners note the seconds hand does not perfectly align with markers, and one owner found the lugs' taper hinders third-party strap fit. The bracelet's length and sporty design are noted as limiting versatility by some. On balance, owners and reviewers rate the Formex Reef 42 mm highly for its impressive wearability and value at the price point.

At a glance

18 of 29 specs differ
Diameter
556 I WT38.5mm
Reef 42 mm42mm
Power Reserve
556 I WT38h
Reef 42 mm56h
Water Resistance
556 I WT200m
Reef 42 mm300m
MSRP
556 I WT$2,106
Reef 42 mm$2,414

Full specifications

Case

8 specs
Category
Tool
Diver
Diameter
38.5mm
42mm
Thickness
11mm
11.4mm
Lug-to-Lug
47mm
Lug Width
20mm
22mm
Finish
satinized
Water Resistance
200m
300m
Caseback

Crystal & Dial

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

Movement

4 specs
Caliber
Sellita SW200-1
Sellita SW300-1
Beat Rate
28,800 vph
0 vph
Power Reserve
38h
56h
Jewels
26
0

Pricing

1 specs
MSRP
$2,106
$2,414
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