Side by side

Oak & Oscar The Humboldt GMT SAR EditionvsSeiko Prospex SPEEDTIMER Seiko 145th Anniversary Limited Edition

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

At a glance

15 of 29 specs differ
Diameter
The Humboldt GMT SAR Edition39.5mm
Prospex SPEEDTIMER Seiko 145th Anniversary Limited Edition42mm
Power Reserve
The Humboldt GMT SAR Edition56 hoursh
Prospex SPEEDTIMER Seiko 145th Anniversary Limited Edition45h
Water Resistance
The Humboldt GMT SAR Edition200m
Prospex SPEEDTIMER Seiko 145th Anniversary Limited Edition100m
MSRP
The Humboldt GMT SAR Edition$2,950
Prospex SPEEDTIMER Seiko 145th Anniversary Limited Edition$2,500

Full specifications

Case

7 specs
Category
GMT
Chronograph
Diameter
39.5mm
42mm
Thickness
12.5mm
14.6mm
Lug-to-Lug
46.8mm
49.5mm
Material
Grade 5 Titanium
Stainless Steel
Water Resistance
200m
100m
Caseback
Solid screw-down
Solid

Crystal & Dial

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

Movement

4 specs
Caliber
Sellita SW330
8R48
Beat Rate
4 vph
28,800 vph
Power Reserve
56 hoursh
45h
Jewels
25
34

Pricing

1 specs
MSRP
$2,950
$2,500

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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 SPEEDTIMER Seiko 145th Anniversary Limited Edition

Owners widely praise the Prospex SPEEDTIMER Seiko 145th Anniversary Limited Edition for its refined presence and intricate dial patterns, with some favoring its unique red dial and steel bezel over other Speedtimer models. However, some owners criticize the 24-hour subdial as useless, the date window as recessed, and the stock bracelet as difficult to fit, while others find the pushers stick out too much. One owner notes the $995 price point is high for the 6R55 movement, suggesting a lower range, though others appreciate the Seiko finishing and charm. On balance, owners rate the Prospex SPEEDTIMER Seiko 145th Anniversary Limited Edition well for its unique aesthetic and finishing, despite some functional and value concerns.

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