Side by side

Formex Reef 39.5 mmvsZelos Swordfish Field 38

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
Swordfish Field 38
ZelosSwordfish Field 38
MSRP $399

At a glance

12 of 29 specs differ
Diameter
Reef 39.5 mm39.5mm
Swordfish Field 3838mm
Power Reserve
Reef 39.5 mm56h
Swordfish Field 3840h
Water Resistance
Reef 39.5 mm300m
Swordfish Field 38200m
MSRP
Reef 39.5 mm$2,230
Swordfish Field 38$399

Full specifications

Case

7 specs
Category
Diver
Field
Diameter
39.5mm
38mm
Thickness
11mm
12mm
Lug-to-Lug
45.5mm
38mm
Lug Width
22mm
20mm
Material
Stainless Steel
316L Stainless Steel
Water Resistance
300m
200m

Crystal & Dial

2 specs
Dial Color
Bahama Blue
Bronze
Lume
Super-LumiNova
None

Movement

2 specs
Caliber
Sellita SW300-1
Seiko NH35
Power Reserve
56h
40h

Pricing

1 specs
MSRP
$2,230
$399

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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.

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.

Zelos Swordfish Field 38

Owners widely praise the Zelos Swordfish Field 38 for its comfortable dimensions, noting they are acceptable both on paper and in practice. The Seiko NH35 movement is highlighted for its exceptionally smooth winding feel. On balance, owners rate the Zelos Swordfish Field 38 highly for its value and comfortable wearability.

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