Side by side

Oak & Oscar The Humboldt GMT SAR EditionvsFormex Reef 39.5 mm

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

The Humboldt GMT SAR Edition
Oak & OscarThe Humboldt GMT SAR Edition
MSRP $2,950
Reef 39.5 mm
FormexReef 39.5 mm
MSRP $2,230

At a glance

14 of 29 specs differ
Diameter
The Humboldt GMT SAR Edition39.5mm
Reef 39.5 mm39.5mm
Power Reserve
The Humboldt GMT SAR Edition56 hoursh
Reef 39.5 mm56h
Water Resistance
The Humboldt GMT SAR Edition200m
Reef 39.5 mm300m
MSRP
The Humboldt GMT SAR Edition$2,950
Reef 39.5 mm$2,230

Full specifications

Case

7 specs
Category
GMT
Diver
Thickness
12.5mm
11mm
Lug-to-Lug
46.8mm
45.5mm
Lug Width
20mm
22mm
Material
Grade 5 Titanium
Stainless Steel
Water Resistance
200m
300m
Caseback
Solid screw-down
Solid

Crystal & Dial

3 specs
Crystal Shape
Double-domed
Flat
AR Coating
Underside
Inner
Dial Color
Black
Bahama Blue

Movement

3 specs
Caliber
Sellita SW330
Sellita SW300-1
Beat Rate
4 vph
28,800 vph
Power Reserve
56 hoursh
56h

Pricing

1 specs
MSRP
$2,950
$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.

Oak & Oscar The Humboldt GMT SAR Edition

Oak & Oscar The Humboldt GMT SAR Edition is praised for its anti-magnetic properties, sandwich lume dial, and overall construction quality for its price point. It features a brushed Grade 5 titanium case, a navy blue sandwich dial with an orange minute track and seconds hand, and a Sellita SW330 movement with a 56-hour power reserve. Minor drawbacks noted include bracelet sizing adjustment and lume brightness. On balance, owners and reviewers rate Oak & Oscar The Humboldt GMT SAR Edition highly for its robust construction and unique dial design at its price point.

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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