LEGO builders learn advanced elements of engineering while improving creative problem-solving skills as they construct and play with this amazing app-controlled LEGO Technic 4x4 X-treme Off-Roader. This 4x4 app-controlled truck is powered by an advanced Smart Hub with 3 motors and operated via the LEGO TECHNIC CONTROL+ app, which delivers super-precise movement and functionality for a highly immersive play experience. Kids can choose from 3 alternative screens on their smart device to drive and traverse obstacles at the touch of a fingertip, play sound effects, complete fun challenges and get real-time feedback, such as a speed and tilt log. Ideal as a Christmas or birthday gift for all aged 11+, this sturdy 958-piece 4x4 app-controlled truck comes with high-rise independent suspension, large wheels with chunky tires and a fresh color scheme with cool sticker detailing. The 42099 LEGO Technic 4x4 X-treme Off-Roader measures over 7” (19cm) high, 12” (33cm) long and 8” (22cm) wide and can be combined with all other original LEGO sets and LEGO bricks for creative play.