370 Motor Micro Pump Booster pump 6V medical pump vacuum pump negative pressure suction ultra quiet Rated voltage: DC6.0V; Rated current: &lt; 420mA Gas flow: /1.8-2.5LPM 1MIN, Pressure range: 400-650mmhg; Maximum vacuum: &gt; 350mmhg Inflation time: 10S (tank to 0 300mmHg 500cc) Packing: 1 * pump