Side by side

Serica Ref. 5303 Diving ChronometervsPhoibos Narwhal

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
Narwhal
PhoibosNarwhal
MSRP $509

At a glance

9 of 29 specs differ
Diameter
Ref. 5303 Diving Chronometer39mm
Narwhal38mm
Power Reserve
Ref. 5303 Diving Chronometer42h
Narwhal40h
Water Resistance
Ref. 5303 Diving Chronometer300m
Narwhal200m
MSRP
Ref. 5303 Diving Chronometer$1,768
Narwhal$509

Full specifications

Case

4 specs
Diameter
39mm
38mm
Thickness
12.2mm
11.5mm
Lug-to-Lug
46.5mm
46mm
Water Resistance
300m
200m

Crystal & Dial

1 specs
Dial Color
Enamel Black
Malachite

Movement

3 specs
Caliber
M100 COSC
Miyota 9015
Power Reserve
42h
40h
Complications
COSC
None

Pricing

1 specs
MSRP
$1,768
$509

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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.

Phoibos Narwhal

Owners widely praise the Phoibos Narwhal's 38mm size and slim 11.5mm height for a 200m diver, noting it wears well on smaller wrists and its case shape resembles an integrated bracelet. The aventurine and Howlite dials are described as captivating, and some appreciate the contrast finishing and retro looks. However, some owners criticize misaligned markers and a tilted date window, with one owner finding the hands thick and popsicle-style. The value proposition is debated, with some finding it a good buy at $390 but others considering $480-$490 too much due to a slabby design and difficult-to-size bracelet. On balance, owners find the Phoibos Narwhal appealing for its design and wearability, though quality control and pricing are points of contention for some.

From video reviewers

The unique stone dial is a significant strength. The bracelet's refinement is a weakness. Reviewers disagree on the dial's appeal, with one highlighting its sunburst effect and applied indices, while another focuses on the natural stone variation.

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