From Pura, this set includes:  One Pura 4™ smart fragrance diffuser and two Capri Blue Volcano fragrances. The Pura 4 smart fragrance diffuser uses innovative smart features paired with premium, clean scents to give you the most modern, customized, and high-end scenting experience possible. Pair with premium fragrances created with ingredients that are safe and clean Together, smart vials and Puralast™ technology deliver a scenting experience of up to 120 hours Adjust fragrance intensity, set schedules and timers, and more in the Pura app Get a consistent scent experience based on the temperature in your home  Volcano Fragrance: The iconic, cult-favorite scent with the perfect blend of tropical citrus and sugary notes. Scent notes:  Top: citrus Middle: tropical fruits Bottom: vanilla Imported.