Dyson’s V8 Animal offers cordless and hassle-free cleaning for up to 40 minutes. The Dyson V8 motor powers this machine with the most powerful suction of any cordless vacuum. Don’t worry about ventilation while you vacuum, because Dyson’s whole machine HEPA filtration captures allergens while expelling cleaner air than the air you breathe.You also get Max Power Mode, providing up to 7 mintues of higher suction for more difficult tasks..