This diffuser enhances any room it's in with its scent and beauty. It makes a great gift for any occasion. Ceramic is the best diffuser for fragrance and the delicious scent really makes any space come alive. Made with top-quality ceramic, the Pretty Valley Ceramic Gypsum Flower Fragrance Diffuser can hold and diffuse fragrance for up to 90 days. Size is 120ml / 4.05fl oz.