DigiSpeed is a digital speedometer using GPS A simple, non distracting speed readout featuring :- Multicolour displayTouch the speed display to change the colourRed,Orange,Yellow,Green,Cyan,Blue,Magenta or Gray. Adjustable display sizeTouch the + or - buttons to enlarge or reduce the size. HUD modeSelect between normal or HUD (Heads-Up-Display)Place on the dashboard of your car and see your speed without taking your eyes off of the road. MPH/KPHToggle between Miles per hour and Kilometers per hour. Touch the background to hide/show the buttons. NOTEThe speed readout is only as good as the GPS signal.The brighter colours (Yellow or Green) are best for HUD mode during daylight.