Side by side
Serica Ref. 5303 Diving ChronometervsBorealis Watch Co. Neptuno
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
11 of 29 specs differDiameter
Ref. 5303 Diving Chronometer39mm
Neptuno40.00mm
Power Reserve
Ref. 5303 Diving Chronometer42h
Neptuno40h
Water Resistance
Ref. 5303 Diving Chronometer300m
Neptuno300m
MSRP
Ref. 5303 Diving Chronometer$1,768
Neptuno$390
Full specifications
Case
4 specsDiameter
39mm
40.00mm
Thickness
12.2mm
14.10mm
Lug-to-Lug
46.5mm
47.20mm
Lug Width
20mm
20mm
Crystal & Dial
3 specsAR Coating
Yes
Inner
Dial Color
Enamel Black
Black
Lume
Super-LumiNova
BGW9
Movement
3 specsCaliber
M100 COSC
NH38
Power Reserve
42h
40h
Complications
COSC
None
Pricing
1 specsMSRP
$1,768
$390
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