A portable beamer for home-made ceilings is delivered with the various Homestar models. The models differ in in the power output for illumination, total number of projected stars, and purpose (e.g. waterproof for bathrooms; extra constellation lines; short film included). Installations are recommended for relaxing venues when providing the romantic ambiance of a sky, for example: restaurants, hotels, art galleries, shopping malls etc. The technology is actually based on the Megastar series, namely "Megastar-Zero". This star ball is as big as a basketball, 27 cm, and weights just 11 kg. It seems a little bit more precise than Homestar. The Homestar models are distributed by the Japanese company Segatoys.