Side by side

Serica Ref. 5303 Diving ChronometervsPhoibos Sea Nymph

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
Sea Nymph
PhoibosSea Nymph
MSRP $240

At a glance

10 of 29 specs differ
Diameter
Ref. 5303 Diving Chronometer39mm
Sea Nymph36mm
Power Reserve
Ref. 5303 Diving Chronometer42h
Sea Nymph40h
Water Resistance
Ref. 5303 Diving Chronometer300m
Sea Nymph300m
MSRP
Ref. 5303 Diving Chronometer$1,768
Sea Nymph$240

Full specifications

Case

4 specs
Diameter
39mm
36mm
Thickness
12.2mm
9.8mm
Lug-to-Lug
46.5mm
42mm
Lug Width
20mm
18mm

Crystal & Dial

1 specs
Dial Color
Enamel Black
Blue

Movement

4 specs
Caliber
M100 COSC
SWISS RONDA 705
Type
Automatic
Quartz
Power Reserve
42h
40h
Complications
COSC
None

Pricing

1 specs
MSRP
$1,768
$240

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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 Sea Nymph

Owners widely praise the Phoibos Sea Nymph's unique mother-of-pearl dial and distinctive bezel styling, with some finding it a good fit for smaller wrists. The 36mm case size is considered unisex, though some owners find it too small for larger wrists, while others enjoy it as a summer watch. The consensus is that the Phoibos Sea Nymph is a fun, visually interesting watch, with its polarizing bezel design being a key talking point.

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