Spray Beauty Instrument Model:RV-6688 Size:8.5*6*18 cm Suitable for the people at various ages , especially for woman, with obvious effects in terms of beauty rendering, Capable of health care for old folks ( It's more preferable if matched with special additives) and capable of refreshing and eyes caring for office workers who are working in dry air-conditioned rooms. Performance Parameters: Ultrasonic frequency : 2.4 MHZ Container capacity : 70 ML Spray particle size : 0.5-5 micron Atomization volume at 0.375 ML/MIN, with automatic timer at 25 min. Atomization volume at 0.5 ML/MIN, with automatic timer at 15 min. Working voltage: DC12V