Side by side

Serica Ref. 8315 Travel ChronometervsIslander Islander Hudson "Harpoon Diver" 40mm Watch with Degrading Black Dial #ISL-302

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
Islander Hudson "Harpoon Diver" 40mm Watch with Degrading Black Dial #ISL-302
IslanderIslander Hudson "Harpoon Diver" 40mm Watch with Degrading Black Dial #ISL-302
MSRP $649

At a glance

17 of 29 specs differ
Diameter
Ref. 8315 Travel Chronometer39mm
Islander Hudson "Harpoon Diver" 40mm Watch with Degrading Black Dial #ISL-30240mm
Power Reserve
Ref. 8315 Travel Chronometer42h
Islander Hudson "Harpoon Diver" 40mm Watch with Degrading Black Dial #ISL-302
Water Resistance
Ref. 8315 Travel Chronometer200m
Islander Hudson "Harpoon Diver" 40mm Watch with Degrading Black Dial #ISL-302200m
MSRP
Ref. 8315 Travel Chronometer$2,479
Islander Hudson "Harpoon Diver" 40mm Watch with Degrading Black Dial #ISL-302$649

Full specifications

Case

6 specs
Category
GMT
Diver
Diameter
39mm
40mm
Thickness
12.3mm
12.1mm
Lug-to-Lug
46.5mm
0mm
Finish
Brushed and polished
Caseback
Solid
Screw-down

Crystal & Dial

5 specs
Crystal Shape
Flat
AR Coating
Yes
Underside
Dial Color
GMT - Enamel Black
Indices
Applied
Lume
Super-LumiNova
None

Movement

5 specs
Caliber
SOPROD C125 COSC
Miyota 9015
Beat Rate
28,800 vph
0 vph
Power Reserve
42h
0h
Jewels
25
0
Complications
GMT, COSC
None

Pricing

1 specs
MSRP
$2,479
$649

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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.

Islander Hudson "Harpoon Diver" 40mm Watch with Degrading Black Dial #ISL-302

Owners widely praise the Islander Hudson "Harpoon Diver" 40mm Watch with Degrading Black Dial #ISL-302 for its eye-catching degrading black dial and strong lume. Some owners note the bracelet's tight links and rough clasp edges as drawbacks, though one owner received a replacement bracelet that improved wearability. Opinions are split on the watch's design, with some finding it overdesigned and reminiscent of older Seiko mods, while others appreciate its originality and find it appealing, particularly at its discounted price. On balance, owners appreciate the Islander Hudson "Harpoon Diver" 40mm Watch with Degrading Black Dial #ISL-302 for its unique dial and value, despite some reservations about the bracelet finishing.

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