iSonic Professional Grade Ultrasonic Cleaner P4820-WPT with Heater and Digital Timer, Plastic Tray Digitial timer: 180, 280, 380, 480 and 90 seconds. Large tank size: 9.6"x5.9"x3". Tank material: stainless steel. Tank capacity 2.6 Qt / 2.5 L. Power: 110V 160W including the heater. (heater 100W. 220V available with extra charge) Ultrasonic frequency: 35,000 Hz. Come with a plastic tray. Warning: Do not use liquid bleach in the s.s. tank and corrosive solvents.