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. Safe & clean scents Pair with premium fragrances created with ingredients that are safe and clean long lasting Puralast™ provides a long-lasting fragrance experience of up to 120 hours smart features Adjust fragrance intensity, set schedules and timers, and more in the Pura app Adaptive diffusion Get a consistent scent experience based on the temperature in your home Never used or opened NWT BRAND NEW IN BOX (will throw in an unopened Pura fragrance free of charge if you buy this at listing price instead of sending me offer $15 value)