Specifications: Electric motor:1/8HP, 110/220V, 60/50Hz. *Air displacement:110V/60Hz,0.9CFM(25L/min) 240V/50Hz, 0.75cfm(21L/min). *Connection:1/8" *Max. pressure:50psi *Electric cable:1.5M *Weight:4.3Kgs *RPM:110V/1700, 220V/1400 *AMP:110V/1A, 220V/0.5A They are quiet in operation for use virtually anywhere, portable and very convenient to carrying, simple automatic control. All these features make them perfect for laboratory, dental or medical use.