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 $1,100
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 models are widely praised for their excellent build quality, value for money, and comfortable wearability, with many appreciating the vintage-inspired designs and robust construction. Owners note the silicone straps are surprisingly comfortable and well-finished, and the Lumibrite lume is excellent. However, some find the 44.3mm size and thickness too large for smaller wrists, though others report the sizing as perfect. The 6R15 movement in some variants offers accuracy around +4 seconds per day with a 50-hour power reserve, while newer movements offer more. Some models are criticized for a bracelet width not matching the case size or a rudimentary clasp for their price point. Overall, owners and reviewers rate the Seiko Prospex Sea highly for its impressive case work and finishing at its price point.

At a glance

14 of 29 specs differ
Diameter
The Humboldt GMT SAR Edition39.5mm
Prospex Sea41.3mm
Power Reserve
The Humboldt GMT SAR Edition56 hoursh
Prospex Sea72h
Water Resistance
The Humboldt GMT SAR Edition200m
Prospex Sea300m
MSRP
The Humboldt GMT SAR Edition$2,950
Prospex Sea$1,100

Full specifications

Case

6 specs
Category
GMT
Diver
Diameter
39.5mm
41.3mm
Lug-to-Lug
46.8mm
48.2mm
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
Anti-reflective coating on inner surface
Lume
Super-LumiNova
LumiBrite on hands, index(es) and bezel

Movement

4 specs
Caliber
Sellita SW330
6R55
Beat Rate
4 vph
28,800 vph
Power Reserve
56 hoursh
72h
Jewels
25
24

Pricing

1 specs
MSRP
$2,950
$1,100
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