Side by side

Marathon Arctic Steel NavigatorvsFormex Reef 39.5 mm

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

Arctic Steel Navigator
MarathonArctic Steel Navigator
MSRP $1,000
Reef 39.5 mm
FormexReef 39.5 mm
MSRP $2,230

At a glance

12 of 29 specs differ
Diameter
Arctic Steel Navigator41mm
Reef 39.5 mm39.5mm
Power Reserve
Arctic Steel Navigator40h
Reef 39.5 mm56h
Water Resistance
Arctic Steel Navigator60m
Reef 39.5 mm300m
MSRP
Arctic Steel Navigator$1,000
Reef 39.5 mm$2,230

Full specifications

Case

6 specs
Category
Pilot
Diver
Diameter
41mm
39.5mm
Lug-to-Lug
48mm
45.5mm
Lug Width
20mm
22mm
Material
316L Stainless Steel
Stainless Steel
Water Resistance
60m
300m

Crystal & Dial

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

Movement

3 specs
Caliber
Swiss High-Torque Quartz
Sellita SW300-1
Type
Quartz
Automatic
Power Reserve
40h
56h

Pricing

1 specs
MSRP
$1,000
$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.

Marathon Arctic Steel Navigator

The Marathon Arctic Steel Navigator is praised for its pragmatic, no-nonsense design and comfortable wearability due to its thinner, ergonomic steel case. Owners and reviewers highlight its highly accurate ETA F06.412 quartz movement, which offers exceptional timekeeping and a seven-year battery life with a field-serviceable battery port. One owner reported their Arctic Steel Navigator's pip fell out shortly after unboxing, and the bezel later became gritty and hard to turn, though another owner found success cleaning their gritty bezel with soap and water. A reviewer noted a preference for a different strap design for a cleaner tail tuck. On balance, owners and reviewers rate the Marathon Arctic Steel Navigator highly for its pragmatic design and accurate, reliable quartz movement.

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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