Side by side

Formex Reef 39.5 mmvsZelos Spearfish 3

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
Spearfish 3
ZelosSpearfish 3
MSRP $749

At a glance

11 of 29 specs differ
Diameter
Reef 39.5 mm39.5mm
Spearfish 340mm
Power Reserve
Reef 39.5 mm56h
Spearfish 340h
Water Resistance
Reef 39.5 mm300m
Spearfish 3200m
MSRP
Reef 39.5 mm$2,230
Spearfish 3$749

Full specifications

Case

6 specs
Diameter
39.5mm
40mm
Thickness
11mm
11.5mm
Lug-to-Lug
45.5mm
40mm
Lug Width
22mm
20mm
Material
Stainless Steel
316L Stainless Steel
Water Resistance
300m
200m

Crystal & Dial

2 specs
Dial Color
Bahama Blue
Diver - Forged Carbon
Lume
Super-LumiNova
None

Movement

2 specs
Caliber
Sellita SW300-1
La Joux-Perret G100
Power Reserve
56h
40h

Pricing

1 specs
MSRP
$2,230
$749

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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 Spearfish 3

The Zelos Spearfish 3 is widely praised for its exceptional finishing, with razor-sharp polish and flawless brushed transitions that owners feel exceed its price point. The 40mm case is noted for its wearability, and the La Joux-Perret G100 movement offers a 68-hour power reserve, with reported accuracy averaging +2.6 seconds per day. Reviewers highlight the exceptionally smooth bi-directional bezel and a tool-less micro-adjustment clasp described as best-in-class among microbrands. The sapphire sandwich construction and lumed bezel are also cited as desirable features. Overall, owners and reviewers rate the Zelos Spearfish 3 highly for its outstanding finishing and value at its price point.

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