Side by side

Oak & Oscar The Humboldt GMTvsSeiko Prospex Sea

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

The Humboldt GMT
Oak & OscarThe Humboldt GMT
MSRP $2,175
Prospex Sea
SeikoProspex Sea
MSRP $1,500

At a glance

17 of 29 specs differ
Diameter
The Humboldt GMT39.5mm
Prospex Sea43.5mm
Power Reserve
The Humboldt GMT56 hoursh
Prospex Sea70h
Water Resistance
The Humboldt GMT200m
Prospex Sea200m
MSRP
The Humboldt GMT$2,175
Prospex Sea$1,500

Full specifications

Case

8 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
316L Stainless Steel
Titanium
Finish
Brushed
Brushed and polished
Caseback
Solid screw-down
Solid

Crystal & Dial

4 specs
Crystal Shape
Double-domed
Flat
AR Coating
Underside
Anti-reflective coating on inner surface
Dial Color
White
Black
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
$2,175
$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

Oak & Oscar The Humboldt GMT owners widely praise its exceptional accuracy, often running at or near 0 seconds per day, and its comfortable wearability with subtle design details. The construction quality for the price point, sandwich lume, and anti-magnetic properties are also highlighted. Some owners find the bracelet sizing adjustment slightly awkward, and one noted the lume could be brighter. Overall, owners rate the Oak & Oscar The Humboldt GMT highly for its accuracy and comfortable wearability.

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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