... : 25W; 5. temperature and humidity indication Ultrasonic Humidifier with negative ion function Item NoDescriptionColorsWCHU-15A1. Product size: 25*25*18cmGreen, Gold ... , Purple, White, Blue2. 1.5L water tank3. Can release negative ion to purify the air4. Max fog releasing: 300 ml/h5 ... . Power: 25W8. CE, RoHS, FCC certified Ultrasonic Humidifier with negative ion function