Learn how a helicopter works – Kids aged 11+ can explore the functions that make a helicopter operate with this LEGO® Technic™ Airbus H175 Rescue Helicopter (42145) search and rescue toy model set Motorized features – Discover features operated by the motor (included), such as the spin rotor and tail, slow and fast rotor speeds, retractable landing gear, winch and spinning replica engine Manual features to explore – Use the swash plate to control the pitch of the rotor blades and open the front and back cowling to explore the steering mechanism of the rotor and the engines Opening doors – Features a cockpit door that opens and closes, plus sliding passenger doors A gift for kids aged 11+ – This helicopter toy set is designed to offer kids a challenging project Measurements – This LEGO® Technic™ building set measures over 9.5 in. (24 cm) high, 28 in. (72 cm) long and 5 in. (13 cm) wide