Side by side

Serica Ref. 5303 Diving ChronometervsIslander Islander Republic Traveler GMT Watch with Black Dial #ISL-276

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

Ref. 5303 Diving Chronometer
SericaRef. 5303 Diving Chronometer
MSRP $1,768
Islander Republic Traveler GMT Watch with Black Dial #ISL-276
IslanderIslander Republic Traveler GMT Watch with Black Dial #ISL-276
MSRP $695

At a glance

17 of 29 specs differ
Diameter
Ref. 5303 Diving Chronometer39mm
Islander Republic Traveler GMT Watch with Black Dial #ISL-27640mm
Power Reserve
Ref. 5303 Diving Chronometer42h
Islander Republic Traveler GMT Watch with Black Dial #ISL-276
Water Resistance
Ref. 5303 Diving Chronometer300m
Islander Republic Traveler GMT Watch with Black Dial #ISL-276200m
MSRP
Ref. 5303 Diving Chronometer$1,768
Islander Republic Traveler GMT Watch with Black Dial #ISL-276$695

Full specifications

Case

6 specs
Category
Diver
GMT
Diameter
39mm
40mm
Thickness
12.2mm
13.1mm
Finish
Brushed and polished
Water Resistance
300m
200m
Caseback
Solid
Screw-down

Crystal & Dial

4 specs
AR Coating
Yes
Underside
Dial Color
Enamel Black
Indices
Applied
Lume
Super-LumiNova
None

Movement

6 specs
Caliber
M100 COSC
Miyota 9075
Type
Automatic
Manual
Beat Rate
28,800 vph
0 vph
Power Reserve
42h
0h
Jewels
25
0
Complications
COSC
None

Pricing

1 specs
MSRP
$1,768
$695

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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. 5303 Diving Chronometer

Owners widely praise the Serica Ref. 5303 Diving Chronometer for its excellent wearability, definitive style, and smooth, confident bezel action. The dual scale on the bezel is noted as surprisingly useful, and the crown action, winding, and hacking are reported to work perfectly. One owner describes the Serica 5303-3 as gorgeous and unique, though another notes the crown can appear comically large. On balance, owners rate the Serica Ref. 5303 Diving Chronometer highly for its blend of unique design and robust functionality.

Islander Republic Traveler GMT Watch with Black Dial #ISL-276

Owners widely praise the Islander Republic Traveler GMT Watch with Black Dial #ISL-276 for its excellent case finishing and build quality, featuring applied indices and a matching date wheel. The watch is noted for wearing well on the wrist with ample micro-adjustment options for a comfortable fit, and it is running at +2 seconds per day out of the box, powered by an SW330-2 movement. Overall, owners rate the Islander Republic Traveler GMT Watch with Black Dial #ISL-276 highly for its finishing and wearability at the price point.

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