Side by side
Serica Ref. 5303 Diving ChronometervsHelgray Poseidon Diver (Automatic)
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
10 of 29 specs differDiameter
Ref. 5303 Diving Chronometer39mm
Poseidon Diver (Automatic)40mm
Power Reserve
Ref. 5303 Diving Chronometer42h
Poseidon Diver (Automatic)40h
Water Resistance
Ref. 5303 Diving Chronometer300m
Poseidon Diver (Automatic)300m
MSRP
Ref. 5303 Diving Chronometer$1,768
Poseidon Diver (Automatic)$249
Full specifications
Case
3 specsDiameter
39mm
40mm
Thickness
12.2mm
12mm
Lug-to-Lug
46.5mm
46mm
Crystal & Dial
3 specsAR Coating
Yes
Inner
Dial Color
Enamel Black
Black
Lume
Super-LumiNova
None
Movement
3 specsCaliber
M100 COSC
NH35 Warranty
Power Reserve
42h
40h
Complications
COSC
None
Pricing
1 specsMSRP
$1,768
$249
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