At CheekyBaby3D LLC they show you those cheeky babies with a short clip of hearing the baby's heartbeat, 2D imaging is black and white view of baby, 3D imaging is a 3D image of your baby where the face can be seen in better detail, 4D imaging is 3D images in motion to create a video, and HD live is a more realistic image of baby using 3D/4D technology.