Side by side

Serica Ref. 5303 Diving ChronometervsIslander Islander Greenport 39mm Dive Watch with Black and White Dial #ISL-300

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 Greenport 39mm Dive Watch with Black and White Dial #ISL-300
IslanderIslander Greenport 39mm Dive Watch with Black and White Dial #ISL-300
MSRP $399

At a glance

16 of 29 specs differ
Diameter
Ref. 5303 Diving Chronometer39mm
Islander Greenport 39mm Dive Watch with Black and White Dial #ISL-30039mm
Power Reserve
Ref. 5303 Diving Chronometer42h
Islander Greenport 39mm Dive Watch with Black and White Dial #ISL-300
Water Resistance
Ref. 5303 Diving Chronometer300m
Islander Greenport 39mm Dive Watch with Black and White Dial #ISL-300200m
MSRP
Ref. 5303 Diving Chronometer$1,768
Islander Greenport 39mm Dive Watch with Black and White Dial #ISL-300$399

Full specifications

Case

5 specs
Thickness
12.2mm
13mm
Lug-to-Lug
46.5mm
0mm
Finish
Brushed and polished
Water Resistance
300m
200m
Caseback
Solid
Screw-down

Crystal & Dial

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

Movement

5 specs
Caliber
M100 COSC
Miyota 8205
Beat Rate
28,800 vph
0 vph
Power Reserve
42h
0h
Jewels
25
0
Complications
COSC
None

Pricing

1 specs
MSRP
$1,768
$399

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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 Greenport 39mm Dive Watch with Black and White Dial #ISL-300

The Islander Greenport 39mm Dive Watch with Black and White Dial #ISL-300 is praised for its 39mm size and comfortable fit, with its bi-directional dual time bezel noted as a useful feature for tracking different time zones. Owners appreciate the lumed ceramic bezel and the slightly domed sapphire crystal. One owner specifically highlights the dial layout as a strong positive. The screw-down crown is also mentioned as a nice touch. On balance, owners rate the Islander Greenport 39mm Dive Watch with Black and White Dial #ISL-300 highly for its wearability and functional bezel.

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