Side by side

Serica Ref. 5303 Diving ChronometervsGrand Seiko SBGE277

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
SBGE277
Grand SeikoSBGE277
MSRP $6,800

At a glance

13 of 29 specs differ
Diameter
Ref. 5303 Diving Chronometer39mm
SBGE27744mm
Power Reserve
Ref. 5303 Diving Chronometer42h
SBGE27772h
Water Resistance
Ref. 5303 Diving Chronometer300m
SBGE277200m
MSRP
Ref. 5303 Diving Chronometer$1,768
SBGE277$6,800

Full specifications

Case

6 specs
Category
Diver
GMT
Diameter
39mm
44mm
Thickness
12.2mm
14.7mm
Lug-to-Lug
46.5mm
50.8mm
Lug Width
20mm
21mm
Water Resistance
300m
200m

Crystal & Dial

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

Movement

4 specs
Caliber
M100 COSC
9R66
Type
Automatic
Spring Drive
Power Reserve
42h
72h
Complications
COSC
None

Pricing

1 specs
MSRP
$1,768
$6,800

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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 SBGE277

Owners find the Grand Seiko SBGE277 gorgeous, with one owner noting their wrist size can accommodate it. The watch was purchased in Japan for $4950 USD, benefiting from a 35-year low yen. One owner expresses significant concern over reported negative experiences with the brand's New Jersey service center, fearing long wait times and subpar treatment. On balance, owners find the Grand Seiko SBGE277 gorgeous, though service center experiences are a notable concern for some.

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