In this article, we explain how you can change the IPD on the HP Reverb G2 The IPD of the HP Reverb G2 can be adjusted manually between 60 mm and 68 mm by a slider that is located under the headset on the left when looking at the device from the front. By moving the slider outward, you change the IPD up to 68 mm. Moved inwards, it can be reduced to up to 60 mm. IPD is short for interpupillary distance, which is the distance between the center of your eyes. It is important that you know your IPD, as headsets can be adjusted to your IPD for optimal image quality and comfort.