... : various uses, more suitable for home use. ultrasonic nebulizer 402AI ultrasonic nebulizer Features: various uses, more suitable for home ... use. b. Facial cleaning & beauty careApplying over 1MHz ultrasonic nebulized mist to clean the face is very effective, and ... jewelry after 10 minutes.Principal technical data:Voltage: AC220V±10% Ultrasonic frequency: 1.7MHz ± 10%Continuous working time: ≥4h ...