Side by side

Serica Ref. 5303 Diving ChronometervsGrand Seiko SBGM245

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
SBGM245
Grand SeikoSBGM245
MSRP $6,100

At a glance

11 of 29 specs differ
Diameter
Ref. 5303 Diving Chronometer39mm
SBGM24540.5mm
Power Reserve
Ref. 5303 Diving Chronometer42h
SBGM24572h
Water Resistance
Ref. 5303 Diving Chronometer300m
SBGM245200m
MSRP
Ref. 5303 Diving Chronometer$1,768
SBGM245$6,100

Full specifications

Case

5 specs
Category
Diver
GMT
Diameter
39mm
40.5mm
Thickness
12.2mm
14.4mm
Lug-to-Lug
46.5mm
48.6mm
Water Resistance
300m
200m

Crystal & Dial

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

Movement

3 specs
Caliber
M100 COSC
9S66
Power Reserve
42h
72h
Complications
COSC
None

Pricing

1 specs
MSRP
$1,768
$6,100

Follow this matchup

Get a note when Serica Ref. 5303 Diving Chronometer vs Grand Seiko SBGM245 gets more votes, a community discussion, or a price drop. No account needed.

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 SBGM245

Owners widely appreciate the Grand Seiko SBGM245 for its blend of sport and luxury, with one enthusiast highlighting its superior workmanship over quartz movements. However, opinions on its size vary, as one owner found the SBGM245 too large, preferring the comfort of a different variant. Overall, owners value the Grand Seiko SBGM245 for its refined craftsmanship, though its wearability is a point of personal preference.

Keep exploring

More watches worth a look

Matched to the watches above on size, movement, style and price — microbrands first. Open any one to dig in.

Adjacent matchups

People also compared

Comparisons nearby in the catalog — alternatives to the watches above paired against the matchup.