Side by side

Serica Ref. 5303 Diving ChronometervsGrand Seiko SBGP009

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
SBGP009
Grand SeikoSBGP009
MSRP $3,100

At a glance

12 of 29 specs differ
Diameter
Ref. 5303 Diving Chronometer39mm
SBGP00940mm
Power Reserve
Ref. 5303 Diving Chronometer42h
SBGP00940h
Water Resistance
Ref. 5303 Diving Chronometer300m
SBGP009100m
MSRP
Ref. 5303 Diving Chronometer$1,768
SBGP009$3,100

Full specifications

Case

5 specs
Category
Diver
Dress
Diameter
39mm
40mm
Thickness
12.2mm
10.6mm
Lug-to-Lug
46.5mm
47mm
Water Resistance
300m
100m

Crystal & Dial

2 specs
Dial Color
Enamel Black
Black
Lume
Super-LumiNova
None

Movement

4 specs
Caliber
M100 COSC
9F85
Type
Automatic
Quartz
Power Reserve
42h
40h
Complications
COSC
None

Pricing

1 specs
MSRP
$1,768
$3,100

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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.

Grand Seiko SBGP009

Grand Seiko SBGP009 owners note its "normal quartz" movement, and one owner criticizes the bracelet for lacking a taper. One owner cites a 40-year-old Seiko quartz watch that has only required battery changes as evidence of the reliability of Grand Seiko's quartz movements. On balance, owners value the Grand Seiko SBGP009 for its perceived long-term reliability.

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