Powerful cleaning effect: The ultrasonic cleaner with a frequency of 40,000 Hz cleans objects thoroughly but is harmless to the object to be cleaned. Ultrasonic vibration produces small bubbles that penetrate between the dirt and the surface with a gentle flow of water between the dirt and the surface, but thoroughly clean the most hidden dirt on the object. It is best to use with cleaning agent, 40KHZ - 42KHZ is enough to remove all the dirt from the object, but with less noise than other 45KHZ cleaners. Easy to use: just press ON/OFF and it's ready. With the reset function, you can get 3 minutes of extra cleaning time. The device turns off automatically when the cleaning time is up. It only takes a few minutes to clean jewelry and watches effectively and gently without damaging your valuables. You can usually use tap water or water with a drop of dishwashing liquid. 600ml Large Capacity + Stainless Steel - The oval design is beautiful, small and delicate. 600ml capacity to meet all your needs. You can use larger items such as larger electric razors or longer makeup brushes. The stainless steel interior is highly corrosion resistant and durable. Wide range of applications: suitable for removing stubborn dirt from razor heads, hairdressing scissors, toothbrushes, dentures, braces, jewelry, waterproof watches, glasses, electronic cigarette, combs, etc. It is recommended to put the cleaned items in the basket for easy cleaning and removal. The watch holder is suitable for watches. Note: Do not clean lenses/sunglasses with scratched or cracked coating.