Side by side

Oak & Oscar The Humboldt GMTvsMaen Skymaster 38 MKIII

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
Skymaster 38 MKIII
MaenSkymaster 38 MKIII
MSRP $1,679

At a glance

17 of 29 specs differ
Diameter
The Humboldt GMT39.5mm
Skymaster 38 MKIII38mm
Power Reserve
The Humboldt GMT56 hoursh
Skymaster 38 MKIII40h
Water Resistance
The Humboldt GMT200m
Skymaster 38 MKIII100m
MSRP
The Humboldt GMT$2,175
Skymaster 38 MKIII$1,679

Full specifications

Case

8 specs
Category
GMT
Chronograph
Diameter
39.5mm
38mm
Thickness
12.5mm
13.4mm
Lug-to-Lug
46.8mm
Lug Width
20mm
Finish
Brushed
Brushed and polished
Water Resistance
200m
100m
Caseback
Solid screw-down
Solid

Crystal & Dial

5 specs
Crystal
Sapphire
Domed Sapphire
Crystal Shape
Double-domed
Flat
AR Coating
Underside
Inner
Dial Color
White
M6.1.1
Lume
Super-LumiNova
None

Movement

3 specs
Caliber
Sellita SW330
Sellita SW510mb
Beat Rate
4 vph
28,800 vph
Power Reserve
56 hoursh
40h

Pricing

1 specs
MSRP
$2,175
$1,679

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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.

Maen Skymaster 38 MKIII

The Maen Skymaster 38 MKIII is praised for its refined case, impressive fit and finish, and compact 38mm size, which offers a premium feel with a sharp, legible dial and well-executed applied markers. Reviewers note the sweet winding action and the vintage-inspired brown sunburst dial with dauphine hands and lollipop register pointers. The watch is powered by a manual-wind Sellita SW510Mb movement with a 63-hour power reserve. Accuracy figures vary, with one reviewer reporting +7 seconds per day and another stating a tolerance of +/-15 seconds per day. On balance, owners and reviewers appreciate the Maen Skymaster 38 MKIII for its refined vintage-inspired design and compact dimensions at its price point.

From video reviewers

The 38mm case size is a key strength for the Maen Skymaster 38 MKIII. Reviewers noted the excellent quality-price ratio for a Swiss-made chronograph.

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