Large Capacity & Waterless Shut-Off: Our cool mist humidifier diffuser has a 200ml capacity and uses state of the art wave diffusion technology to atomize essential oils for better life. For product life, the atomizer will auto turn off when waterless. Long Time Working: This Fragrance Oil Diffuser comes with 4 built-in timer setting modes: 1 / 3 / 6 Hours/ Continuity. You only need to pour in enough water and a little essential oil to enjoy the smell of forest. Inner peace,sit back and then work, study, clean, unwind, exercise, etc. Seven Soothing Light & Delicate Mist: Bedroom Scent Diffuser Vaporizers uses ultrasonic technology to make the mist more delicate. With plant essential oils, it can soothe nervous and soul. Great night light for young children who are afraid of the dark night. Wonderful Gifts for Your Lover and Friend: The Aroma Vapor Diffusers can be used as Humidifier,Air aroma machine, Night Light,Great Gift. To create a peaceful and comfortable environment for you to relax and enjoy life. Diffuser humidifier with essential oils is the best gift for your sweetheart.