The Vicks Mini Filter Free Cool Mist Humidifier provides soothing, visible mist for better breathing and a more comfortable sleep. Â Designed for low-maintenance operation, this unit requires no filters and is ultra-quiet. Â Features adjustable humidity control, scent pad slot for added soothing comfort, soft glow nightlight, filter-free operation, very quiet operation and auto shut-off for added safety. Run time: Up to 20 hours.1.9 liter/0.5-gallon capacity. Suitable for small sized rooms. Accessories: Vicks VapoPads- VSP-19-CAN/VSP19VPC; Protec Cleaning Cartridge – PC-1C-BX.