Side by side
Resco Custom C4: Stainless Gen2 GMT, Stealth dialvsSeiko Prospex SPEEDTIMER Seiko Brand 100th Anniversary SPEEDTIMER Limited Edition
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
9 of 29 specs differDiameter
Custom C4: Stainless Gen2 GMT, Stealth dial42mm
Prospex SPEEDTIMER Seiko Brand 100th Anniversary SPEEDTIMER Limited Edition42mm
Power Reserve
Custom C4: Stainless Gen2 GMT, Stealth dial40h
Prospex SPEEDTIMER Seiko Brand 100th Anniversary SPEEDTIMER Limited Edition40h
Water Resistance
Custom C4: Stainless Gen2 GMT, Stealth dial100m
Prospex SPEEDTIMER Seiko Brand 100th Anniversary SPEEDTIMER Limited Edition100m
MSRP
Custom C4: Stainless Gen2 GMT, Stealth dial$1,705
Prospex SPEEDTIMER Seiko Brand 100th Anniversary SPEEDTIMER Limited Edition$2,400
Full specifications
Case
3 specsCategory
—
Chronograph
Thickness
12mm
12.9mm
Lug-to-Lug
46mm
49.6mm
Crystal & Dial
3 specsCrystal Shape
Flat
Curved
AR Coating
Inner
Super-clear coating
Lume
None
LumiBrite on hands and index(es)
Movement
2 specsCaliber
Ronda 515
5X83
Jewels
25
14
Pricing
1 specsMSRP
$1,705
$2,400
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