Side by side

Serica Ref. 5303 Diving ChronometervsKUOE ROYAL SMITH 90-006

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
ROYAL SMITH 90-006
KUOEROYAL SMITH 90-006
MSRP $795

At a glance

11 of 29 specs differ
Diameter
Ref. 5303 Diving Chronometer39mm
ROYAL SMITH 90-00635mm
Power Reserve
Ref. 5303 Diving Chronometer42h
ROYAL SMITH 90-00642h
Water Resistance
Ref. 5303 Diving Chronometer300m
ROYAL SMITH 90-006100m
MSRP
Ref. 5303 Diving Chronometer$1,768
ROYAL SMITH 90-006$795

Full specifications

Case

6 specs
Category
Diver
Dress
Diameter
39mm
35mm
Thickness
12.2mm
10.4mm
Lug-to-Lug
46.5mm
42mm
Lug Width
20mm
18mm
Water Resistance
300m
100m

Crystal & Dial

2 specs
Crystal Shape
Flat
Dome
Dial Color
Enamel Black
Ivory

Movement

2 specs
Caliber
M100 COSC
Miyota 9039
Complications
COSC
None

Pricing

1 specs
MSRP
$1,768
$795

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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.

KUOE ROYAL SMITH 90-006

Owners widely praise the KUOE ROYAL SMITH 90-006 for its visual appeal and sapphire crystal with AR coating. The watch functions correctly and keeps time at approximately +5 seconds per day on the wrist, powered by a Miyota 9039 movement. On balance, owners value the watch's aesthetics and specifications, though some question its overall value proposition.

From video reviewers

The watch's unique blend of modern and retro elements is a notable strength, with a textured ivory waffle dial and Breguet numerals giving it the look of a vintage watch from the 1950s and 1960s. A potential drawback is the ~$770 USD price point, which is significant for a microbrand. Reviewers disagree on the movement's accuracy, with one reviewer noting it is noisy and another describing it as a "Japanese-manufactured high beat premium automatic movement".

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