Standard firmware displays assist level, speed, voltage in the form of 6 bars, and Cumulative distance (odometer, ODO); Trip distance (TRIP); Average speed (AVG); Single trip time (TIME).
I've only read the manual, not installed it (yet), but there is a branch of the Open Source Firmware for the VLCD5 which flashes the motor firmware, and if I've read it right, can be configured to display any 6 of the following parameters :-
0 – motor temperature, only with sensor installed (° C)
1 - remaining battery charge (%)
2 - battery voltage (Volt)
3 - battery current (Amp)
4 - power absorbed by the motor (Watt / 10)
5 - throttle adc value (8 bit)
6 - torque sensor adc value (10 bit)
7 - pedal cadence (rpm)
8 - human power (Watt / 10)
9 - torque sensor range (10 bit)
10- consumed Wh