The LEGO TECHNIC Deep-Sea Research Submarine Set 42201 features a total of 413 pieces and is designed for ages 9 and up. This set allows builders to construct a detailed deep-sea research submarine, complete with various intricate features. The submarine measures 11.02 inches in height, 11.77 inches in length, and 9.96 inches in width, providing an immersive building experience for LEGO enthusiasts. The set is sealed, ensuring that all pieces are included for a satisfying construction process.