• 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 • Motorised features – Discover features operated by the motor (included), such as the spin rotor and tail, slow and fast rotor speeds, retractable landing gear, hoist 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 24 cm (9.5 in.) high, 72 cm (28 in.) long and 13 cm (5 in.) wide • Batteries and motor – This battery-powered helicopter toy requires 6 x 1.5v LR6 (AA) batteries (not included). Set also includes 1 x motor • An introduction to engineering – LEGO® Technic buildable model sets feature realistic movement and mechanisms that introduce young LEGO builders to the universe of engineering • High quality – LEGO® Technic components meet rigorous industry standards to ensure they are consistent, compatible and connect reliably every time • Safety first – LEGO® Technic components are dropped, heated, crushed, twisted and analysed to make sure they meet strict global safety standards