Relieves cough and congestion. Dry room air is drawn into the vaporizer. The vaporizer boils the water and produces a pure stream vapor. The vaporizer will automatically shut-off when the water reaches minimum level. Dual scent pad slots for Vicks VapoPads. Durable housing includes triple wall insulation to keep tank water at a safe temperature. Easy fill water level mark. "Twist and lift cap" features molded fingers grips and a large nightlight to locate vaporizer in a dark room. Protective steam guard design lowers the outlet steam temperature by 20%. Small/medium room size. 18-24 hours of operation. 1.5 gallon capacity. Note: Product may differ slightly from photograph.