Gauge help

[joesscamaro]

I'm trying to choose a set of gauges and I'm not sure what the difference is between the two sets I'm looking at. Can anyone explain? I'll copy and paste the description from each description.

1) Programmable Gauge Sets: The Electronic Gauge Sets include an electronic speedometer that is fully programmable for easy calibration with any tire size/axle ratio. Electronic sets include a electronic Speedo and tach and four electronic gauges

2) Mechanical Gauge Sets: Mechanical speedo and tachs and four electronic gauges.