Ultrasonic equipment 1.Clean watches,Jewelry,necklace, eyeglass,etc 2.time ... Effective.4, watches, precision instruments: With V-Kool special ultrasonic cleaner, watches, precision instruments, eliminating one by one removable ... equipment, electrical maintenance: Cell phones, walkie-talkie, Walkman and other sophisticated electrical circuit boards, spare parts, the use of ultrasonic cleaner ...