Side by side

Serica Ref. 5303 Diving ChronometervsGrand Seiko SLGW007

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
SLGW007
Grand SeikoSLGW007
MSRP $10,000

At a glance

12 of 29 specs differ
Diameter
Ref. 5303 Diving Chronometer39mm
SLGW00738.6mm
Power Reserve
Ref. 5303 Diving Chronometer42h
SLGW00780h
Water Resistance
Ref. 5303 Diving Chronometer300m
SLGW00730m
MSRP
Ref. 5303 Diving Chronometer$1,768
SLGW007$10,000

Full specifications

Case

5 specs
Category
Diver
Dress
Diameter
39mm
38.6mm
Thickness
12.2mm
9.95mm
Lug-to-Lug
46.5mm
45mm
Water Resistance
300m
30m

Crystal & Dial

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

Movement

4 specs
Caliber
M100 COSC
9SA4
Type
Automatic
Manual
Power Reserve
42h
80h
Complications
COSC
None

Pricing

1 specs
MSRP
$1,768
$10,000

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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 SLGW007

Grand Seiko SLGW007 owners and reviewers praise its compact 38.6mm x 9.95mm Evolution 9 case and the textured "Moonlit Birch" dial, described as moody, elegant, and captivating. The technically credible 9SA4 hand-wound movement with an 80-hour power reserve is also highlighted. Its 30m water resistance and lack of lume are noted as appropriate for a dress watch. Overall, owners and reviewers rate the Grand Seiko SLGW007 highly for its refined case, captivating dial, and updated movement.

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