Works perfectly. COOL MIST HUMIDIFIER: Uses the power of ultrasonic vibration to turn water into a cool hydrating mist that runs for up to 12 hours. Mist adjuster goes from gentle mist to tropical rainforest with a twist of the knob. DIFFUSER: Add Breath Frida Vapor Drops or any aromatherapy-grade essential oil for easier breathing - it covers up to 320 square feet with a 0.5 gallon tank. COLOR CHANGING NIGHTLIGHT: Equipped with a range of nightlight colors for even more control over the dreamy ambiance. AUTO-STOP FEATURE: Designed to automatically turn off when the water runs out or the tank is removed. 3-IN-1: Use humidifier, diffuser and nightlight all together, or individually. Care Instructions: Lift water tank off base unscrew water tank cap in a counter-clockwise direction fill tank with water Use filtered or distilled water for best performance (optional) add breathefrida vapor drops (or other aromatherapy-grade essential oils) as desired screw cap back on the water tank in a clockwise direction place water tank back on base plug power cord into base + outlet twist the power + mist Adjuster knob clockwise to turn the humidifier on and to control the mist level.