Mine's slightly different, it's an HUD that runs off the OBD2 socket, so it powers up when you switch on, I only have speed displayed but it can show, RPM on the long arch sweep you can just see in my original post, as well as coolant temp, volts & other stuff

Of course it over-reads by a few MPH (as it's the ECU speedo feed) but at least you are camera safe, if you're a bit tech savvy you can get into the menu and tweek the % addition to say 105% so will be closer to a nav accuracy


Jon M