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Powerful non-destructive cleaning: The 750 ml ultrasonic cleaning machine made of SUS 304 stainless steel can produce ultrasonic waves with a frequency of 40,000 Hz without the need to use harsh chemicals. Simply fill the water tank with water and carefully place the items inside. Remove stains without damaging valuables and bring them back to their shine. 5 digital timers: The digital LED display shows the cleaning time, 5 different timers (90/180/280/380/480 s), you can choose the most suitable time according to your cleaning requirements. Just add water, press a button and start washing. (You can add a small amount of hand sanitizer/dishwashing detergent to enhance the cleaning effect.) Multiple uses: Ideal for cleaning jewelry, glasses, watches, print heads, ink cartridges, metal plates and more. It is an ideal device for laboratories, opticians, jewellery shops, dental practices, offices and home use. Humanised design and 100% satisfaction: This product has passed professional certification. The cleaner comes with a removable cleaning basket and CD holder to protect the items while staying in place in the tank for optimal cleaning. If for any reason you are not satisfied with our ultrasonic cleaners, please feel free to contact us and we will solve the problem for you within 24 hours. Reminder:Some products cannot be cleaned with this product, please check the instructions before use. If you have any questions about our ultrasonic glasses cleaner, please feel free to contact us, we will solve the problem as soon as possible. We strive to provide you with an excellent shopping experience. › See more product details