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Electric-free DC motor2500mAh lithium battery3.5 hours of full chargeMaximum continuous operation time: 40 minutesAir pressure: 18 kPa for high speed, 7 kPa for low speedDust capacity: 0.35 litersLED touch screen(6-speed control)Foldable tubeAluminum tubeMulti-cyclone filter + HEPA filter + spongeWh..