Features:The ultrasonic cleaner is a microprocessor-controlled device that uses ultrasonic or high frequency sound waves to clean jewelry and other delicate items. Ultrasonic cleaning is based on the cavitation effect caused by high frequency ultrasonic wave vibration signals in fluid. Microscopic bubbles that expand and rapidly collapse cause cavitation, which creates an effective cleaning action on the surface of object being cleaned. Additionally, the bubbles are small enougugh to penetrate even microscopic crevices, cleaning them thoroughly and consistently. Note: During cleaning, the'ZiZi' noise is normal. Application:Service line, Electron line, Medicament line, Laboratory, Machine line, Horniness alloy line, Chemistry line .Industry and mining enterprise, universities, collegesand institutes scientific research unit laboratory; Hospital;Electronic workshop assembly line; Clock and watch eyeglasses shop,jewelry; Jeweler's shop, Family.you will use ultrasonic cleaner for everywhere.Clean things: Electronic products, mechanical hardware fitting,eyeglasses, jewelry, clock and watch, money, fruit and so on. Jewellery, Shaver Heads, Toothbrushes , Waterproof Watches ,Glasses Motor Parts,Ink Cartridges,Machine Nozzles ,Chiropody Instruments ,Dental and laboratory partsCoins ,Pen Heads ,Printer Heads ,Printed Circuit Boards Veterinary Instruments Product Size:Inner Tank Size: 150*135*100mm/5.9*5.3*3.9 inShape Size: 175*162*210mm/6.9*6.4*8.3 inPackage includes:1 X Ultrsonic Cleaner w/ lid & basket (2L)1 X UK Power Cord1 X Manual Guide NOTE:1.3L ,2L ,3.2L ,6.5L,the actual capacity is 1L ,1.7L, 3L, 6L,thanks for your understanding!Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering..