Acquired ISO 9001,ISO 13485 quality management system and European CE 0434 certification SpecificationsUltrasonic Frequency42,000 HzTank MaterialStainless Steel SUS303Tank Capacity1,375 ml ( 2.4 pint )Quiet, Solid States CircuitryTimer5 Cycles, with Digital Time DisplayPower SupplyAC 100 ~ 120V, 60HzAC 220 ~ 240V, 50 HzPower60 W ( 110 V ) / 70 W ( 230 V )Unit Size230 x 180 x 160 mm ( L x W x H )N ...