Worn on the top right of the Screen HUD (Head Up Display), the Computer gives you many informations in one instrument.
It is the Pressure Gauge + depth Meter + Compass, all in one.

The display is a digital screen, you can choose your Pressure unit (Bar or Psi) by CHAT command (see in list below).
You can read in real time on it the air consumption, depending of your depth, and the tank pressure.