AJK-B4001 WORKING VOLTAGE: DC 6.0V DC 12.0V DC 24V WORKING CURRENT: 〈500mA 〈300mA 〈200mA CHARGE TIME: 〈5s(rise from 0 to 300mmHg in 500CC container) TIGHTNESS: 〈5mmHg/min NOISE: 〈75dB MAX. PRESSURE: 〉450mmHg MAX. DEGREE OF VACUUM: 〈-55Kpa FLUX: 〉2.0LPM PIPE DIAMETER: Φ5.0 mm EXTERNAL SIZE: 32×51×75 mm APPLICATION: Massage Armchair, Water Dispenser, etc.