Vicks 1.5 Gallon Vaporizer With Night LightAbout the product: 1. 5 gallon capacity for 18 24 hour operation per filling and medicine cup allows the use of Vicks vaposteam or Kaz inhalant Triple wall insulation keeps reservoir water at a safe temperature Large Night Light provides added safety and convenience, particularly in children's rooms Automatic shut Off when reservoir water reaches minimum level How it Works: The Vicks Warm Steam Vaporizer with protective Steam Guard design provides