Every Tornado built since the mid 50's, has featured a built-in voltage booster system. The #3005E also features a variable electronic heat control and a huge auto transformer. This really fast machine has a 7" diameter head and thus produces about 50% more floss than the 5". 1/3 horsepower 3450 rpm motor with sealed ball bearings. Four large brushes and two extra wide slip rings enusre long, dependable life. 3216 watts. Ship weight 80 lbs.