UGEARS - Date Navigator 2.0Number of parts: 24 Assembly time: 20 min Level: Easy Model size: 10. 5*9. 8*1. 8 cm When planning an activity for the week, everyone is faced with the question : what day of the week it is going to be. Usually we look at a smartphone or a datebook. Surprise your family, friends and colleagues with an original mechanical calendar navigator ,that youve built with your own hands!