Features of a silver fragrance device: Coverage of up to 2500 to 3000 cubic metres High quality perfume diffuser, which can be applied in large rooms, commercial buildings, restaurants, open spaces and cinema halls It works with nano technology to remove unpleasant odors in the air Easy to use to spread the fragrance in a short time and last for long hours Quick control via mobile APP to ensure safety Contents of a silver fragrance device: Bottle with internal capacity of 800 ml (lasts from one month to 6 months) Free gift 220 ml perfume bottle Equipped with 3 operating modes A timer to know when the fragrance will expire Information about the device: Warranty 2 years