Car mini humidifier-- mini humidifier lowers the noise level for quiet humidification. so it won’t disturb your sleep, working, driving or study. Portable humidifier-- if there is no spray, please reinstall the swab according to the instructions and check whether there is a spring under the cotton swab. Home tabletop humidifier-- function: can be used to give your car and home fresh air and remove odor. Air spray humidifier-- the humidifier can increase the humidity of the air and also help prevent dry and chapped skin in dry seasons. Office humidifier-- humidify your living space to prevent dry, stuffy air and flu and cold . prevent dry and chapped skin in dry winter days.