Vitruvi Stone Diffuser Color: Eucalyptus "Crafted to naturally scent your space using 100% pure essential oils, this diffuser also serves as an elegant piece of decor. The Stone Diffuser features an 8-hour run time, ensuring long-lasting fragrance throughout your day. Experience the perfect blend of functionality and style with the Stone Diffuser." Materials Matte ceramic, BPA-free plastic. Diffuser type Ultrasonic: 2.5 vibrations/second. Misting output 4-hour consistent: 1 fl. oz./hour. 8-hour intermittent: 0.40 fl. oz./hour. Diffusing capacity 500 sq.-ft. Dimensions Width: 8.7 cm Height: 18 cm Weight 1.1 lbs Safety Automatically turns off when time is up or when water runs out. Water capacity 70 ml. Includes a power cord compatible with North American outlets.