Side by side

Serica Ref. 5303 Diving ChronometervsGrand Seiko SBGW281

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
SBGW281
Grand SeikoSBGW281
MSRP $4,900

At a glance

13 of 29 specs differ
Diameter
Ref. 5303 Diving Chronometer39mm
SBGW28137.3mm
Power Reserve
Ref. 5303 Diving Chronometer42h
SBGW28172h
Water Resistance
Ref. 5303 Diving Chronometer300m
SBGW28130m
MSRP
Ref. 5303 Diving Chronometer$1,768
SBGW281$4,900

Full specifications

Case

6 specs
Category
Diver
Dress
Diameter
39mm
37.3mm
Thickness
12.2mm
11.7mm
Lug-to-Lug
46.5mm
44.3mm
Lug Width
20mm
19mm
Water Resistance
300m
30m

Crystal & Dial

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

Movement

4 specs
Caliber
M100 COSC
9S64
Type
Automatic
Manual
Power Reserve
42h
72h
Complications
COSC
None

Pricing

1 specs
MSRP
$1,768
$4,900

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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 SBGW281

Grand Seiko SBGW281 owners and reviewers alike praise its classic 37mm size and timeless, no-bezel design, with enthusiasts calling these manual-wind models "perfect Grand Seikos" for their thin profile, accessible price, and dial symmetry. The champagne dial is noted for its evocative, melting snow aesthetic, complemented by a gold seconds hand and a box crystal. The winding action is described as exceptionally smooth with satisfying clicky feedback, and the lug-to-lug measurement is approximately 45mm. This timepiece is splash resistant and retails for US$4,800. On balance, enthusiasts and reviewers highly regard the Grand Seiko SBGW281 for its elegant proportions and refined dial presentation.

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