How to use: 1.Install 2 AAA batteries at the bottom of the jewelry cleaner. (not included batteries) 2.Pour water or cleaning liquid into the water tank of the machine, 3.Close the lid and Turn on the switch. (The best cleaning time is 5 minutes, this cleaner has no timing function) Specification: Type: Ultrasonic Cleaner Suitable For: Glass Material: Plastic Color: White Power: Battery Powered (not included) Outside dimensions:19cm*7.2cm*6.8cm(7.48"x2.83"x2.67") Internal dimensions:15.2cm*5.4cm*3.6cm(5.98"x2.12"x1.41") Package Including: 1X Ultrasonic Cleaner For Jewelry Glasses