BLACKBURN DELPHI 4.0 WIRELESS - Cyclometer with wireless speed transmission and wired cadence. Cadence function included with current, average and maximum cadence featured. Large easy to read screen with high contrast display. Back light for night time use. 4 lines of data on each display. Time of day, ride time and total time. Speed display accurate to 0.1 mph. Distance display accurate to 0.01 mile. Trip / total distance. Fits regular and oversize handlebars. Large easy to read speed display. 11 pre-programmed wheel sizes. Current, average and maximum speed display. 2 bike setting with individual and combined odometers. 100 hour ride time or total time chronograph. 20 lap chronograph. Limited lifetime warranty.