1.Professional Digital Ultrasonic cleaner 2.high-power ultrasonic cleaner, with heated function 3.Large Tank for Profession Professional Digital Ultrasonic cleaner 1. specially designed for large ... .Jewelry, watches straps and bands, glasses, dentures, toothbrushes, tablewareSpecifications: 1) Ultrasonic frequency: 42,000Hz 2) Tank material: stainless steel SUS304 3 ...