This is electrical working model. Input voltage AC 100 V - 240 V (adapter included).
16 Planetary Gears
How it works
Included: Motor, Adapter (100 - 240 volts), electrical wires, steel shafts, marbles, cog & Screws, brass barriers (U shaped), switch, instructions (pdf file) and everything you need to build this machines.
Bearing support for all rotary components
All of them packing in Pu foam trays to make sure not missing parts and keep them safe in shipping.
Complete size: 17.3 x 17.3 x 19.6 inches (440 x 440 x 500 mm)
Item weight: 11 lbs (6 kg)