The Geo Series - newly designed handmade and modern essential oil diffuser. Perfect for modern home. Utilising clever air pump technology the Round Geo nebulising unit delivers a cool and pure atmospheric essential oil vapour. Once your chosen essential oils are added, air is pumped into and swirls from within the glassware reservoir, atomising the essential oils within and sending an absolute aromatic mist into your environment lasting a few hours (for any space up to 50 square meters) No water is required and no heat is used, both of which may diminish the delicate, aromatic and therapeutic properties of essential oils.