Side by side
Seiko Prospex SPEEDTIMER MechanicalvsStewart Dawson Royal Marines
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
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At a glance
14 of 29 specs differDiameter
Prospex SPEEDTIMER Mechanical39.5mm
Royal Marines42mm
Power Reserve
Prospex SPEEDTIMER Mechanical72h
Royal Marines41h
Water Resistance
Prospex SPEEDTIMER Mechanical200m
Royal Marines100m
MSRP
Prospex SPEEDTIMER Mechanical$995
Royal Marines$1,451
Full specifications
Case
6 specsCategory
Chronograph
—
Diameter
39.5mm
42mm
Thickness
12mm
12.5mm
Lug-to-Lug
44.5mm
48mm
Lug Width
20mm
—
Water Resistance
200m
100m
Crystal & Dial
4 specsCrystal Shape
Curved
—
AR Coating
Anti-reflective coating on inner surface
—
Dial Color
—
Green
Lume
LumiBrite on hands and index(es)
Super-LumiNova
Movement
3 specsCaliber
Seiko 6R55
Sellita SW200-1
Power Reserve
72h
41h
Jewels
24
0
Pricing
1 specsMSRP
$995
$1,451
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