ALFA-Pro features: "New in '06: Super High Contrast display technology Dual odometers read in Hundredths or Thousandths NEW - Six digit correction factor for super precise mileage NEW - Dual odometer input with separate correction factors NEW - Automatic factor calculation Speedometer readout Clock works in Seconds or Hundredths Elapsed timer Target TIME and DISTANCE countdowns Zero-on-Hold to clear incremental time and distance together Performance timer measures 0-60 and 1/4 mile Compact and light - 7.7" x 5.1" x 2.0", ~1 lb. Optional drivers display: "New in '06: Low Profile Driver's display "New in '06: Super High Contrast display technology Shows the driver Time, Speed, and Distance Shows countdowns Not effected by HOLD or navigator inputs Upgrade for older ALFA-Pro's available - call 5.5" x 2.3" x 1.5" New for 2003: NO MORE PLASTIC! Aircraft aluminum enclosure with baked enamel finish, Hard mounting points, and integral sunshade. See the complete owners manual... (Acrobat file - 800k)