Side by side
Serica Ref. 5303 Diving ChronometervsBiatec T. G. Masaryk
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
T. G. Masaryk40mm
Power Reserve
Ref. 5303 Diving Chronometer42h
T. G. Masaryk41h
Water Resistance
Ref. 5303 Diving Chronometer300m
T. G. Masaryk100m
MSRP
Ref. 5303 Diving Chronometer$1,768
T. G. Masaryk$2,214
Full specifications
Case
6 specsCategory
Diver
—
Diameter
39mm
40mm
Thickness
12.2mm
11.15mm
Lug-to-Lug
46.5mm
48mm
Material
Stainless Steel
316L Stainless Steel
Water Resistance
300m
100m
Crystal & Dial
3 specsAR Coating
Yes
Inner
Dial Color
Enamel Black
Beige
Lume
Super-LumiNova
None
Movement
3 specsCaliber
M100 COSC
Sellita SW200-1
Power Reserve
42h
41h
Complications
COSC
None
Pricing
1 specsMSRP
$1,768
—
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