... are difficult in hand washing.Ultrasound vibrate cleaning does no harm to cleaning articles.Ultrasonic vibrate washing is earth- ... , clock & watches, eyeglasses, contact lens, dentures, table-ware, printer inkjet, seal and comb, toothbrush, baby feeder, baby nipple, etc ... add little bit detergent for better cleaning7. Distinct cleaning result8. Cleaning articles to shine like new9. Compact lid design ...