... and silver jewelry, necklaces, earrings, glasses, nozzles, watches, mobile, denture, experiment and equipment. E-2000 Digital Ultrasonic CleanerFeatures:With strong ultrasonic ... and silver jewelry, necklaces, earrings, glasses, nozzles, watches, mobile, denture, experiment and equipment.Specifications: Ultrasonic Frequency 40,000 HzTank MaterialStainless steel ...