Christmas Car Advent Calendar, Porsche 911 Turbo Advent Calendar, 1:43 scale Porsche 911 Turbo, 24 steps in 24 days, Car fans Christmas gift. Product details and description. 24 days of heart-racing fun. With the 911 Turbo advent calendar, Porsche enthusiasts can build their own Porsche 911 Turbo in 24 steps. Additionally required: 2 x 1.5 V batteries (type AA). Ages 14 and up. Engine sound at the push of a button. Includes accompanying book with instructions and background knowledge. Original Porsche 911 model. Plastic base with sound module.