Side by side

Serica Ref. 8315 Travel ChronometervsOak & Oscar The Humboldt GMT

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

Ref. 8315 Travel Chronometer
SericaRef. 8315 Travel Chronometer
MSRP $2,479
The Humboldt GMT
Oak & OscarThe Humboldt GMT
MSRP $2,175

At a glance

14 of 29 specs differ
Diameter
Ref. 8315 Travel Chronometer39mm
The Humboldt GMT39.5mm
Power Reserve
Ref. 8315 Travel Chronometer42h
The Humboldt GMT56 hoursh
Water Resistance
Ref. 8315 Travel Chronometer200m
The Humboldt GMT200m
MSRP
Ref. 8315 Travel Chronometer$2,479
The Humboldt GMT$2,175

Full specifications

Case

6 specs
Diameter
39mm
39.5mm
Thickness
12.3mm
12.5mm
Lug-to-Lug
46.5mm
46.8mm
Material
Stainless Steel
316L Stainless Steel
Finish
Brushed and polished
Brushed
Caseback
Solid
Solid screw-down

Crystal & Dial

3 specs
Crystal Shape
Flat
Double-domed
AR Coating
Yes
Underside
Dial Color
GMT - Enamel Black
White

Movement

4 specs
Caliber
SOPROD C125 COSC
Sellita SW330
Beat Rate
28,800 vph
4 vph
Power Reserve
42h
56 hoursh
Complications
GMT, COSC
None

Pricing

1 specs
MSRP
$2,479
$2,175

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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.

Serica Ref. 8315 Travel Chronometer

Serica Ref. 8315 Travel Chronometer owners and reviewers praise its neo-vintage aesthetic, comfortable 39mm size, and unique day/night bezel design. Some find the lack of a date function a drawback, and the mirrored 12-hour bezel with AM/PM text is considered less practical than a traditional 24-hour bezel for time zone reading, with the lollipop-style 24-hour hand and asymmetrical bezel design also noted as potentially confusing. The watch is powered by a COSC-certified Soprod C125 movement with a 40-hour power reserve. One owner noted import duties and that the strap's aggressive taper required using the last hole for a proper fit. On balance, Serica Ref. 8315 Travel Chronometer is appreciated for its distinctive design and wearability, though its GMT functionality and bezel design are points of contention for some.

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.

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