- Projects your speed and RPM directly onto your windscreen
- Wide LED screen for vivid and clear display
- Receive driving speed data via your vehicle's internal computer
- Connects to your vechicle's OBDII interface for plug and play installation
This has 18 or so decent reviews, also worth having a look at are the other online only deals, sorted of course, from lowest price.
Got it for $35 including shipping on ebay