Side by side
Serica Ref. 5303 Diving ChronometervsNaga Watches Spire
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
Spire39mm
Power Reserve
Ref. 5303 Diving Chronometer42h
Spire—
Water Resistance
Ref. 5303 Diving Chronometer300m
Spire100m
MSRP
Ref. 5303 Diving Chronometer$1,768
Spire$853
Full specifications
Case
5 specsCategory
Diver
—
Thickness
12.2mm
9.9mm
Lug-to-Lug
46.5mm
—
Lug Width
20mm
—
Water Resistance
300m
100m
Crystal & Dial
3 specsAR Coating
Yes
Inner
Dial Color
Enamel Black
White
Lume
Super-LumiNova
None
Movement
3 specsCaliber
M100 COSC
Miyota 9039
Power Reserve
42h
—
Complications
COSC
None
Pricing
1 specsMSRP
$1,768
—
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