Side by side

Serica Ref. 5303 Diving ChronometervsBaltic Aquascaphe Dual-Crown - Black PVD

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
Aquascaphe Dual-Crown - Black PVD
BalticAquascaphe Dual-Crown - Black PVD
MSRP $724

At a glance

8 of 29 specs differ
Diameter
Ref. 5303 Diving Chronometer39mm
Aquascaphe Dual-Crown - Black PVD39mm
Power Reserve
Ref. 5303 Diving Chronometer42h
Aquascaphe Dual-Crown - Black PVD42h
Water Resistance
Ref. 5303 Diving Chronometer300m
Aquascaphe Dual-Crown - Black PVD200m
MSRP
Ref. 5303 Diving Chronometer$1,768
Aquascaphe Dual-Crown - Black PVD$724

Full specifications

Case

3 specs
Thickness
12.2mm
11mm
Lug-to-Lug
46.5mm
47mm
Water Resistance
300m
200m

Crystal & Dial

2 specs
Dial Color
Enamel Black
Crown - Black PVD - Black
Lume
Super-LumiNova
BGW9

Movement

2 specs
Caliber
M100 COSC
Miyota 9039
Complications
COSC
None

Pricing

1 specs
MSRP
$1,768
$724

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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.

Baltic Aquascaphe Dual-Crown - Black PVD

The Baltic Aquascaphe Dual-Crown - Black PVD is widely praised for its refined case finishing, including polished chamfers and brushed lugs, and its comfortable, wearable 39mm size. Reviewers highlight its clean dial design and excellent legibility, with some noting improved legibility from larger lume-filled markers. The functional internal bezel, operated by a non-screw-down crown, is a key feature for dive timing. The watch utilizes a Miyota 9039 automatic movement with a 42-hour power reserve and hacking seconds. One reviewer found the 4 o'clock crown for time setting to be fiddly, and another noted the sapphire crystal can be somewhat reflective. The price is cited as €550 or €650 (ex VAT). On balance, reviewers commend the Baltic Aquascaphe Dual-Crown - Black PVD for its vintage-inspired aesthetic combined with modern build quality and wearability at its price point.

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