VEVOR Knob Ultrasonic Cleaner 3L 40kHz Ultrasonic Cleaning Machine Knob Control Sonic Cleaner 304 Stainless Steel Ultrasonic Cleaner Machine with Heater & Timer for Cleaning Jewelry Eyeglasses WatchesAdjustable Time/Temp40kHz Frequency3L Tank Capacity304 Stainless SteelHumanized DetailsVersatile UsesCapacity: 3L/0.79 Gal,Time Range: 0-30 min,Ultrasonic Frequency: 40kHz,Voltage: 110V/60HZ,Product Weight: 8.16 lbs/3.7 kg,Material: 304 Stainless Steel,Ultrasonic Power: 120W,Tank Size (L*W*H): 9.45"x5.51"x3.94"/24x14x10 cm,Heating Power: 100W,Temp Range: 68-176℉/20-80℃,Item Size (L*W*H): 10.63"x6.69"x9.45"/27x17x24 cm