1)Stable performance 2)mini Ultrasonic Cleaner for home use 3)A year guarantee 4) Save power 5)Ultrasonic clean The ultrasonic cleaner produce the high-frequency ultrasonic wave source by circuit of high-frequency shake, utilizing ultrasonic wave to shake to wash the shower nozzle fast. 1. Articles for office use: printer head. 2. Glasses and waterproof watch. 3. Metal jewelry like necklace, ring ...