Portable Ultrasonic Jewellery Cleaner: 500ml ultrasonic cleaner with SUS304 stainless steel for professional cleaning, convenient to carry with you and easy to put in the case, not occupying space. Powerful Nondestructful Cleaning:The professional ultrasonic cleaner with 45,000Hz frequency produces powerful but gentle cleaning water bubbles and water ripple, 360 deep cleaning, quickly clean the surface and deep stains. Jewelry cleaning liquid can be added for enhanced cleaning. 5 Digital Timer Function: LED digital display precisely indicates the cleaning time, 5 timer settings (90/180/280/380/480s) that allows you to set a suitable working time freely according to different contamination of different objects, meeting all your cleaning needs. One Touch button with indicator, easy operation. Multiple Purposes: The jewellery cleaner ultrasonic can be used for jewelry, denture, glasses, watch, coin, bracelets, razors, laboratory instrument, etc. Suitable for optical stores, jewelry stores, watch stores, repair stores, dental clinics, offices and home use.