Young inventors aged eight and over will find everything they need for an adventure on the water in the 'Power Boats' package - whether at sea, in the pool or in the bathtub at home. With this package, they can discover the world of shipyards, boat builders and regatta captains. Three construction projects with all electronic components let them build a sleek propeller boat, a fast water companion or an electric junk. What the little inventors still need: Two 1.5-volt AA batteries and some standard household materials.