Now Solutions essential oils are genuine reflections of the botanicals of which there born. This wide array of essential oils is comprised of 100% pure and natural extracts teeming with beneficial substances possessing functional groups that, when properly diffused, can encourage wellness, tranquility and inspired moments. This ultrasonic aromatherapy diffuser with 2.4 million ultrasonic vibrations per second (the highest ultrasonic vibration frequency in the market) is a state-of-the-art aromatherapy system. Product Features: Create instant relaxing aromatherapy by adding essential oils 6 soothing color lights to choose * Can be used as a ultrasonic humidifier Advanced ultrasonic diffusing technology with auto-shut off when water level is low. High vibration frequency: 2.4 Mhz Whisper-quiet ultrasonic operation Provides moisture for Dry Cough, Sinus Irritation, Dry Skin High capacity water tank: 100ml Perfect for room up to 250 sq. ft. Easy to clean