Side by side
Serica Ref. 5303 Diving ChronometervsOblvlo BLM II
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
12 of 29 specs differDiameter
Ref. 5303 Diving Chronometer39mm
BLM II41mm
Power Reserve
Ref. 5303 Diving Chronometer42h
BLM II42h
Water Resistance
Ref. 5303 Diving Chronometer300m
BLM II50m
MSRP
Ref. 5303 Diving Chronometer$1,768
BLM II$265
Full specifications
Case
5 specsCategory
Diver
Sport
Diameter
39mm
41mm
Thickness
12.2mm
12.5mm
Lug-to-Lug
46.5mm
46mm
Water Resistance
300m
50m
Crystal & Dial
2 specsAR Coating
Yes
Inner
Dial Color
Enamel Black
Black
Movement
4 specsCaliber
M100 COSC
Miyota 8215
Power Reserve
42h
42h
Jewels
25
21
Complications
COSC
None
Pricing
1 specsMSRP
$1,768
$265
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