Low noise and better sleep: using noise reduction technology, the ultrasonic diffuser operates quietly without dripping sound, creating a quiet and soothing environment for undisturbed relaxation, study, work and sleep 500ML diffuser, suitable for large rooms: it can cover an area of 480 square feet, and can be used for large rooms. Enjoy up to 20 hours of fragrance. Three time settings for the option: 1/3/6H timer. Excellent safety: You can keep this aromatherapy diffuser at night without worrying about overheating, because it has a water free automatic shutdown protection function to ensure the safety of you and your family. Fashionable gift - With its minimalist design and modern optics, the aromatherapy diffuser provides a very precious gift for your friends and family. The essential oil diffuser is designed with ultra modern marble texture, which perfectly matches any decorative style. Some essential oils can cure sinuses and help you breathe better when using air conditioners. You can also drop your favorite essential oil into the water, because it is also the perfect perfume diffuser! Product size: 17.2 * 10.2cm