4M Science - Salt Powered Robot
Construct this 4M mini vehicle, add salty water to the power compartment and off it goes! No batteries required! Includes: a set of plastic mechanical parts (assembly required), 2 carbon sheets, 2 aluminium sheets, 2 fabric sheets, motor with wires and contacts, dropper, accessories and detailed instructions. Age 8+ years. Part of the Green Science range. Distributed in New Zealand by Holdson.