Side by side

Phoibos LeviathanvsFormex Reef 39.5 mm

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

Leviathan
PhoibosLeviathan
MSRP $309
Reef 39.5 mm
FormexReef 39.5 mm
MSRP $2,230

At a glance

9 of 29 specs differ
Diameter
Leviathan45mm
Reef 39.5 mm39.5mm
Power Reserve
Leviathan40h
Reef 39.5 mm56h
Water Resistance
Leviathan500m
Reef 39.5 mm300m
MSRP
Leviathan$309
Reef 39.5 mm$2,230

Full specifications

Case

4 specs
Diameter
45mm
39.5mm
Thickness
15.5mm
11mm
Lug-to-Lug
54mm
45.5mm
Water Resistance
500m
300m

Crystal & Dial

2 specs
AR Coating
Yes
Inner
Dial Color
Blue
Bahama Blue

Movement

2 specs
Caliber
NH 35
Sellita SW300-1
Power Reserve
40h
56h

Pricing

1 specs
MSRP
$309
$2,230

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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.

Phoibos Leviathan

Owners widely report the Phoibos Leviathan offers a vintage experience at an affordable price due to its proportions and conservative design. However, the watch is considered well-made and sturdy but quite heavy, with a 45mm x 54mm lug-to-lug case and a 15.5mm thickness, leading some owners to replace the stock band. On balance, owners rate the Phoibos Leviathan highly for its vintage feel and sturdy build at its price point.

From video reviewers

The watch features 500m water resistance and a Seiko NH35 automatic movement. The case size is a point of contention, with reviewers noting it is substantial and may overwhelm smaller wrists, while others highlight a 40mm case size as an improvement.

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.

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