Ultrasonic frequency: 2.4MHZ 0.4 to 1.0 ml/minuteOutput voltage: DC12VInput voltage: 110-220V can works in all countriesDroplet size: 0.5 micron to 5 micronCup capacity: 10ml maximumSize: 14 x 8 x 5.7 cm / 5.51 x 3.15 x 2.24 inchPakage Include( in original packed):1 x Ultrasonic Nebulizer 2 x Mask (1 adult size， 1 children size)5 x Medical cups2 x Mouth pieces1 x AC adapter 1 x English Manual