Chicco next2 stars projector which can attach to crib or bedside panel universal attaching system suitable for travel cot or crib fits a maximum of 38mm tube diameter it has three different functions the moon button allows three different functions if you press it once you get a ceiling projection if you press it twice the toy turns into an atmospheric lamp and if you press the button three times you have a nightlight moon the musical note button allows the toy to play different melodie