Side by side
Serica Ref. 5303 Diving ChronometervsSlow Watches Slow Automatic GMT
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
13 of 29 specs differDiameter
Ref. 5303 Diving Chronometer39mm
Slow Automatic GMT41mm
Power Reserve
Ref. 5303 Diving Chronometer42h
Slow Automatic GMT—
Water Resistance
Ref. 5303 Diving Chronometer300m
Slow Automatic GMT100m
MSRP
Ref. 5303 Diving Chronometer$1,768
Slow Automatic GMT—
Full specifications
Case
6 specsCategory
Diver
—
Diameter
39mm
41mm
Thickness
12.2mm
7.6mm
Lug-to-Lug
46.5mm
46mm
Lug Width
20mm
—
Water Resistance
300m
100m
Crystal & Dial
3 specsAR Coating
Yes
Inner
Dial Color
Enamel Black
Silver
Lume
Super-LumiNova
None
Movement
3 specsCaliber
M100 COSC
ETA 2893-2
Power Reserve
42h
—
Complications
COSC
None
Pricing
1 specsMSRP
$1,768
—
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