Side by side

Oak & Oscar The Humboldt GMT SAR EditionvsSeiko Prospex Sea

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
Prospex Sea
SeikoProspex Sea
MSRP $1,500

At a glance

15 of 29 specs differ
Diameter
The Humboldt GMT SAR Edition39.5mm
Prospex Sea43.5mm
Power Reserve
The Humboldt GMT SAR Edition56 hoursh
Prospex Sea70h
Water Resistance
The Humboldt GMT SAR Edition200m
Prospex Sea200m
MSRP
The Humboldt GMT SAR Edition$2,950
Prospex Sea$1,500

Full specifications

Case

7 specs
Category
GMT
Diver
Diameter
39.5mm
43.5mm
Thickness
12.5mm
13.3mm
Lug-to-Lug
46.8mm
51mm
Lug Width
20mm
22mm
Material
Grade 5 Titanium
Titanium
Caseback
Solid screw-down
Solid

Crystal & Dial

3 specs
Crystal Shape
Double-domed
Flat
AR Coating
Underside
Anti-reflective coating on inner surface
Lume
Super-LumiNova
LumiBrite on hands and index(es)

Movement

4 specs
Caliber
Sellita SW330
6R35
Beat Rate
4 vph
28,800 vph
Power Reserve
56 hoursh
70h
Jewels
25
24

Pricing

1 specs
MSRP
$2,950
$1,500

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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.

Seiko Prospex Sea

Seiko Prospex Sea owners and reviewers praise its Marinemaster-style aesthetic, excellent case finishing, and impressive LumiBrite lume. The watch is powered by the 6R15 movement with a 50-hour power reserve and comes with both a steel bracelet and a silicone strap. Some owners find the Seiko Prospex Sea to be a great value and a suitable first "proper" watch, while others report it is uncomfortably big, thick, and heavy on smaller wrists. Reviewers note the GMT function is secondary with a less prominent scale, and the bezel's quieter clicks may not appeal to all. On balance, owners and reviewers rate the Seiko Prospex Sea highly for its classic design and finishing at its price point.

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