Side by side

Serica Ref. 5303 Diving ChronometervsMomentum Aquamatic

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

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.

Momentum Aquamatic

Owners widely praise the Momentum Aquamatic for its comfortable fit and finish, particularly at its $200 price point. The Miyota 9015 automatic movement is seen as a significant upgrade over previous iterations, offering good value. Customer service is also noted as responsive. Information on the brand and watch can be scarce. Overall, owners rate the Momentum Aquamatic highly for its excellent value and the quality of the Miyota 9015 movement.

At a glance

12 of 29 specs differ
Diameter
Ref. 5303 Diving Chronometer39mm
Aquamatic42mm
Power Reserve
Ref. 5303 Diving Chronometer42h
Aquamatic42h
Water Resistance
Ref. 5303 Diving Chronometer300m
Aquamatic200m
MSRP
Ref. 5303 Diving Chronometer$1,768
Aquamatic$629

Full specifications

Case

5 specs
Category
Diver
Diameter
39mm
42mm
Thickness
12.2mm
0mm
Lug-to-Lug
46.5mm
0mm
Water Resistance
300m
200m

Crystal & Dial

3 specs
AR Coating
Yes
Dial Color
Enamel Black
Lume
Super-LumiNova
None

Movement

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

Pricing

1 specs
MSRP
$1,768
$629
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