Hands Craft, Electro-Mechanical Wooden Puzzle: Parachute Tower with LED lights, amusement park series. Perfect for birthdays, a crafting hobby project, and makes great home or office decor. Build your very own amusement park series. Plays: "Falling Flower" Puzzle Pieces: 335 Pieces Assembled Size: 5.5 x 5.5 x 11.8 in Assembly Time: Approximately 5.5 hours Recommended Age: 14+ Difficulty: 4 out of 5 Requires 3 AAA batteries to operate (batteries not included).