In addition to the pen the Q1 offers an analog joystick on the left side. I'm not sure if there's something wrong with ours or not, but the experience is awful. You have to push and hold the menu button on the right, then move the joystick on the left. The mouse jumps around in seemingly 10 pixel intervals, it's just terrible. To click something you have to press the auto scaler button on the left once or twice depending on which click action you want. Be mindful though that the entire time you have to be holding down the menu button on the right. The analog input is basically useless as a result, hence the benefit of having a Bluetooth mouse.
You can read the full review here.