BEIBITONGHUA Transformable Electric Gear Building Blocks DIY Educational Toy for Boys Ages 3-6 Creative Birthday Gift Stationery

Electric gear blocks with music and manual rotation functions

Motor-driven gears that rotate continuously when the switch is on

Battery-powered (3 AA batteries) with visible gears for clear observation of gear speed and movement

Manual rotation handle allows gear movement without batteries

Gears can accelerate or decelerate manually for interactive mechanical learning

Gear-driven excavator arm with up and down movement; excavator arm is movable

Large gear blocks upgraded for better grip suitable for small hands

Multiple assembly possibilities for creative and varied shapes