?2-in-1 Humidifier & Diffuser?: This F300 vaporizer acts as both a humidifier and a diffuser, so you can add essential oil with the humidifier's mist to spread your favorite fragrances throughout the room. NO OIL TRAY NEEDED! ADD ESSENTIAL OIL DIRECTLY INTO THE WATER TANK! ?Top Fill Design?: Remove the lid to add water or essential oil directly into the water tank, making refills easier than ever. ?Easy to Clean?: A big 200mm wide opening of water tank makes it easy to clean, ensures healthy mist for you. ?360?? Rotatable Mist Outlet?: Adjust the mist outlet direction at any time you want. ?Auto Shut Off?: The humidifier will automatically turn off when it runs out of water preventing damage to the unit and keeping you safe.