Power button. For use with fragrance oils. Instructions, USB cable 95 cm.Automatic switch-off when the water level is too low.Dimensions diameter 9 x high 7 cm. 4 functions room fragrance, mini humidifier, air purifier, water atomizer (diffuser).1.5W 5VDC. Can be filled with a maximum of 60 ml of water. Freshly ionized air and pleasant fragrance. Ideal gift.Energy saving and safe. No heat emission. Only water needs to be added. Automatic shutdown.Lid with water transport tube removable. (Easy to clean).