Side by side

Serica Ref. 5303 Diving ChronometervsPhoibos Wave Master GMT

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
Wave Master GMT
PhoibosWave Master GMT
MSRP $399

At a glance

10 of 29 specs differ
Diameter
Ref. 5303 Diving Chronometer39mm
Wave Master GMT39.5mm
Power Reserve
Ref. 5303 Diving Chronometer42h
Wave Master GMT40h
Water Resistance
Ref. 5303 Diving Chronometer300m
Wave Master GMT200m
MSRP
Ref. 5303 Diving Chronometer$1,768
Wave Master GMT$399

Full specifications

Case

5 specs
Category
Diver
GMT
Diameter
39mm
39.5mm
Thickness
12.2mm
12.7mm
Lug-to-Lug
46.5mm
46mm
Water Resistance
300m
200m

Crystal & Dial

1 specs
Dial Color
Enamel Black
Black

Movement

3 specs
Caliber
M100 COSC
SII NH34
Power Reserve
42h
40h
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.

Phoibos Wave Master GMT

The Phoibos Wave Master GMT is widely praised for its attractive design, comfortable 20mm tapering bracelet, and wearability on a 7" wrist, with owners finding it a strong value proposition at $220. Some minor finishing flaws, such as slightly crooked markers and off-center dial numbers, are noted by one owner, while accuracy averages around 5-10 seconds over two weeks. Overall, owners rate the Phoibos Wave Master GMT highly for its distinctive design and comfortable wearability at its price point.

From video reviewers

The Wave Master GMT's notable feature is its 200M water resistance. A drawback is the rattle of the bracelet. Reviewers disagree on the watch's value, with one reviewer noting its significant weight for a 39.5mm case diameter, but the other reviewer doesn't mention any specific weaknesses or trade-offs.

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