Side by side

Seiko Prospex SPEEDTIMERvsSunrex Beta

The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.

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Prospex SPEEDTIMER
SeikoProspex SPEEDTIMER
MSRP $725
Beta
SunrexBeta
Buy from Seiko ↗
Buy used on eBay ↗
Buy from Sunrex ↗
Buy used on eBay ↗

At a glance

11 of 29 specs differ
Diameter
Prospex SPEEDTIMER39mm
Beta41mm
Power Reserve
Prospex SPEEDTIMER40h
Beta40h
Water Resistance
Prospex SPEEDTIMER100m
Beta100m
MSRP
Prospex SPEEDTIMER$725
Beta—

Full specifications

Case

5 specs
Category
Chronograph
—
Diameter
39mm
41mm
Thickness
13.3mm
14mm
Lug-to-Lug
45.5mm
48mm
Lug Width
20mm
—

Crystal & Dial

3 specs
Crystal Shape
Curved
Flat
AR Coating
Anti-reflective coating on inner surface
Inner
Lume
LumiBrite on hands and index(es)
None

Movement

2 specs
Caliber
V192
Epson VS75A
Type
Quartz
Solar

Pricing

1 specs
MSRP
$725
—
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