Side by side
Naga Watches SpirevsSeiko Prospex SPEEDTIMER Mechanical
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
14 of 29 specs differDiameter
Spire39mm
Prospex SPEEDTIMER Mechanical39.5mm
Power Reserve
Spire—
Prospex SPEEDTIMER Mechanical72h
Water Resistance
Spire100m
Prospex SPEEDTIMER Mechanical200m
MSRP
Spire$853
Prospex SPEEDTIMER Mechanical$995
Full specifications
Case
6 specsCategory
—
Chronograph
Diameter
39mm
39.5mm
Thickness
9.9mm
12mm
Lug-to-Lug
—
44.5mm
Lug Width
—
20mm
Water Resistance
100m
200m
Crystal & Dial
4 specsCrystal Shape
Flat
Curved
AR Coating
Inner
Anti-reflective coating on inner surface
Dial Color
White
Black
Lume
None
LumiBrite on hands and index(es)
Movement
3 specsCaliber
Miyota 9039
6R55
Power Reserve
—
72h
Jewels
25
24
Pricing
1 specsMSRP
—
$995
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