From Pura, this set includes:  One Pura 4™ smart fragrance diffuser, Santorini refill, and Sunday Morning refill. 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  Santorini Vial: Mediterranean fig, red currant, amber, and sandalwood create a scent that will make you dream of the Greek Isles. Santorini scent notes:  Top: Mediterranean fig Middle: Red currant Bottom: Amber, sandalwood Sunday Morning Vial : Top notes of pear and bergamot float above a heart of jasmine and gardenia with a heady base of amber woods. Sunday Morning scent notes:  Top: Pear, bergamot Middle: Jasmine, gardenia Bottom: Amber woods Imported.