Side by side
Serica Ref. 5303 Diving ChronometervsLum-Tec B67 Day Date
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
16 of 29 specs differDiameter
Ref. 5303 Diving Chronometer39mm
B67 Day Date44mm
Power Reserve
Ref. 5303 Diving Chronometer42h
B67 Day Date40h
Water Resistance
Ref. 5303 Diving Chronometer300m
B67 Day Date200m
MSRP
Ref. 5303 Diving Chronometer$1,768
B67 Day Date$545
Full specifications
Case
7 specsCategory
Diver
Sport
Diameter
39mm
44mm
Thickness
12.2mm
—
Lug-to-Lug
46.5mm
51.5mm
Lug Width
20mm
22mm
Material
Stainless Steel
316L Stainless Steel (DLC coated)
Water Resistance
300m
200m
Crystal & Dial
4 specsCrystal
Sapphire
Domed Sapphire
AR Coating
Yes
Inner
Dial Color
Enamel Black
B67 Day Date
Lume
Super-LumiNova
None
Movement
4 specsCaliber
M100 COSC
Ronda 515
Type
Automatic
Quartz
Power Reserve
42h
40h
Complications
COSC
None
Pricing
1 specsMSRP
$1,768
$545
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