Side by side
Serica Ref. 5303 Diving ChronometervspOrtahl Zenmaster
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
14 of 29 specs differDiameter
Ref. 5303 Diving Chronometer39mm
Zenmaster40.5mm
Power Reserve
Ref. 5303 Diving Chronometer42h
Zenmaster42h
Water Resistance
Ref. 5303 Diving Chronometer300m
Zenmaster100m
MSRP
Ref. 5303 Diving Chronometer$1,768
Zenmaster$695
Full specifications
Case
7 specsCategory
Diver
—
Diameter
39mm
40.5mm
Thickness
12.2mm
10.2mm
Lug-to-Lug
46.5mm
—
Lug Width
20mm
—
Material
Stainless Steel
316L Stainless Steel
Water Resistance
300m
100m
Crystal & Dial
3 specsAR Coating
Yes
Inner
Dial Color
Enamel Black
—
Lume
Super-LumiNova
None
Movement
3 specsCaliber
M100 COSC
Miyota 9015
Power Reserve
42h
42h
Complications
COSC
None
Pricing
1 specsMSRP
$1,768
$695
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