The main difference between the Alpha Plus Black 4-piece Newborn Set Deluxe highchair and the Hauck Alpha Plus Move lies in the castors and accessories. The Alpha Plus Move has castors like the Beta Plus and a wooden dining board, while the Alpha Plus Black has no castors. The Alpha Plus Move is also cheaper as it does not come with a safety bar, which the Beta Plus does. Both highchairs are compatible with newborn attachments, which are available separately or can be included in the set.