120 ML Output: 5-20 m² What it is: A handcrafted, Ultrasonic essential oil diffuser that doubles as a sleek simple piece of home decor. Suggested Usage: -Add 10–15 drops of pure essential oils to the stone ultrasonic diffuser. For cleaning and usage tips please look at this MANUAL we put together for you! Why use.Essential oil diffusers are a way to create your own custom home aromas without the synthetic chemicals of traditional room fresheners or candles. This stone essential oil diffuser is made with a hand-milled, ceramic cover and contains an easy-to-clean water basin made of BPA-free, high-grade plastic. It uses ultrasonic technology to diffuse essential oils without heating them.