V4 Smart Fragrance Diffuser - 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. Fills medium-to-large rooms; bedrooms, kitchens and living rooms. Wi-Fi connection required.BenefitsSafe & clean scents - Pair with premium fragrances created with ingredients that are safe and cleanAdaptive diffusion - Get a consistent scent experience based on the temperature in your homeLong lasting - Puralast provides a long-lasting fragrance experience of up to 120 hoursSmart features - Adjust fragrance intensity, set schedules and timers, and more in the Pura appFeaturesSmart schedules, timers and more - Adjust fragrance intensity, easily switch between fragrances, set schedules and timers, and moreall from the Pura appPuralast creates the best scenting experience youll find anywhere. With this technology, your diffuser learns from your feedback to efficiently fill your space with your desired scent intensity for up to 120 hours per smart fragrance vial.Fragrances sold separatelyAutomatic vial detection - Simply insert your smart fragrance vial and Pura 4 automatically detects the fragrance, creating a seamless swapping experience.Adaptive diffusion technology reads the room's temperature and adjusts according to your preferences for a consistent, reliable scenting experience. - V4 Smart Fragrance Diffuser