The LEGO NINJAGO Arin's Spinjitzu Battle Mech (71839) building set lets boys and girls 7 years old and up command the new-generation ninja's towering battle machine from NINJAGO Dragons Rising Season 3. This fully posable mech dominates pretend play action scenes with its rotating torso, articulated arms and legs, and twin massive sword accessories. The opening chest cockpit reveals the Arin minifigure ready for action, with loyal companion Baby Riyu figure by his side. Together, they'll take on the menacing Spectral Dragonian Warrior minifigure in reenactments of kids' favorite NINJAGO Dragons Rising scenes or star in all-new imaginary adventures. For even more action, kids can combine this mech set with others in the 2024 LEGO NINJAGO collection to create the ultimate NINJAGO mech! Perfect for solo adventures or building with friends, this building set makes an ideal birthday or holiday gift for NINJAGO fans and kids who love building challenges. The master mech capability allows builders to mix and match components of Arin's Spinjitzu Battle Mech with Cole's Elemental Earth Mech (71806), Sora's Elemental Tech Mech (71807), Kai's Elemental Fire Mech (71808), and Lloyd's Elemental Power Mech (71817) (each set sold separately) for unlimited customization possibilities. The LEGO Builder app guides young builders through intuitive step-by-step instructions with helpful 3D viewing tools. Contains 213 pieces.