The clean and care professional ultrasonic cleaner effectively cleans your jewelry by using a wave frequency. The machine uses a 45kHz frequency and 120 volt AC power adapter with a stainless steel 420ML tank that includes an inner jewelry basket and watch holder. The cleaning cycle is three minutes long and concludes with an automatic shut-off for consumer safety. You can watch your jewelry being cleaned with the clear lid. Add 1 tablespoon of jewelry cleaner, like our Ross-Simons Fine Jewelry Cleaner or Foaming Jewelry Cleaner (524208) for extra thorough cleaning. Includes a one-year manufacture's warranty. Measures 4 1/2"H x 4 1/2"W and holds 11 ounces. Item(s) are safely and securely packaged.