iSonic ultrasonic cleaner offers best performance and price combination. It cleans jewelry, watches, eyeglasses, and many other personal items thoroughly. It cleans deep inside difficult to reach places such as settings, narrow crevices and small holes. It brings sparkles and luster back to your diamond, other jewelry, watches, and makes eyeglasses crystal clear. Touch-sensing controls are better for water proof. Digital timer with 5 settings: 180, 300, 480, 600 and 90 seconds. Polished stainless steel tank for easy cleaning and maintenance. Tank size: 6. 3"X3. 3"X2" (oval). tank capacity 1. 3Pt/0. 6L. Unit size 8"x5. 5"X5. 1"/20. 4x14x13 cm. Power 35 W, 110 V. Ultrasonic frequency 42, 000 Hz. Accessories included: plastic basket, Watch stand. White color. Work best with iSonic ultrasonic cleaning solution concentrate CSGJ01. A 8OZ bottle is included. Only a capful is needed for a tank of water. To remove silver tarnish, use iSonic ultrasonic silver tarnish remover CSST01. Water or general jewelry solutions will not remove tarnish. 5 international safety certifications including GS for Germany which has the toughest safety standard assure highest quality