Pura Smart Diffuser - Device & 2pc Holiday and Birchwood Pine. Smart Home Fragrance Diffuser powered by Pura fills your home with your favorite NEST New York fragrances. This set features: The aroma of a majestic winter forest is created by blending white pine, fir balsam, and birchwood over a base of rich musk and amber. Holiday: The quintessential scent of the holiday season is created by blending pomegranate, mandarin orange, pine, cloves, and cinnamon with a hint of vanilla and amber. Dimension: L 4.00"x W 4.00" x H 2.00". Cruelty-Free & Vegan. Flame-Free. Free from Formaldehyde, Parabens, Phthalates. 2 Vials, Up to 240+ hours of scent.