4-IN-1 FUNCTION: With its discreet modern design, our ultrasonic aroma diffuser actually performs four functions in one device: humidifier, purifier, night light and aromatherapy. REVITALISATIN BENEFTS: It uses electronic frequencies to create vibration in water and create a scented aroma to calm and revitalize your body. TIMER AND WIFI CONTROL: You can set the diffuser to work continuously for up to 15 hours by selecting its three timer functions. Plus, you can use WiFi via its app to control all its settings. WHISPER-QUIET OPERATION: It operates whisper-quiet with a waterless auto-off to protect its operations. ADJUSTABLE BRIGHTNESS AND COLOURS: Adjust the level of brightness or select your desired night light colour with its 7-colour LED light to give you soothing hues all through the day or night.