Air pump: 1.gas of out :>20~23l/min 2.Dimensions:134x126x83 mm 3.Noise <45db 4.weight : 1.1kg Air pump parameter :MODEL:TM3020B (ALUMINUM CASE) VOLTAGE:AC220 /120V / 110V/ 100V / 24V POWER:18W FRENQUENCY:50/60HZ PRESS:>25KPa GAS OUT:20~23L/min NIOSE:<45dB OUTLET DAIMETER: 3.5mm INSTALLASIONS DIMENSIONS :52x76 DIMENSIONS:134x126x83 mmWEIGHT:1.1kgUSAGE:Massage chair. Medical equipment. Beauty ...