Side by side

Serica Ref. 5303 Diving ChronometervsMr Jones Watches K9

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
K9
Mr Jones WatchesK9
MSRP $225

At a glance

13 of 29 specs differ
Diameter
Ref. 5303 Diving Chronometer39mm
K9
Power Reserve
Ref. 5303 Diving Chronometer42h
K940h
Water Resistance
Ref. 5303 Diving Chronometer300m
K9
MSRP
Ref. 5303 Diving Chronometer$1,768
K9$225

Full specifications

Case

6 specs
Category
Diver
Casual
Diameter
39mm
Thickness
12.2mm
Lug-to-Lug
46.5mm
Lug Width
20mm
Water Resistance
300m

Crystal & Dial

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

Movement

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

Pricing

1 specs
MSRP
$1,768
$225

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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.

Mr Jones Watches K9

Owners widely report the Mr Jones Watches K9 is a fun, quirky, and unique artistic piece that serves as a conversation starter, with some noting reliable movements and solid customer support. However, some owners found the build quality lacking, reporting issues with misaligned hands and needing to return their watches multiple times, while others find them difficult to read and question the value at full price. On balance, owners view the Mr Jones Watches K9 as a well-made artistic statement, with its unique design being the primary draw despite potential readability and build quality concerns.

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