Recently got an Acewell 2853 Digital Speedometer . About $180 AU.
Speed easy to read but the idiot lights aren't very bright during the day, zip tied the sensor to the old cable at the wheel, (still on, but capped off behind headlight for now.) Just stuck the magnet on the hub on the steel hub cover. Tacho was unreliable until I wired it straight to the coil, instead of winding it around the HT lead.
Has a functions to record average speed, 2 trip meters, odometer, running hours, total ignition on hours, clock, flash at selectable redline, highest revs and speed, can set for digital tach readout, as well as around edge of face, kph/mph. fuel gauge, (can be turned off)
750 K7 77
That's kph, second gear