This ultrasonic humidifier sounds lower than the library-level sound and can be silently injected into your room without affecting your study, work or sleep. It ideal for baby rooms, living rooms, offices and other medium to large rooms. It is compact hand held in the palm of your hand as infants and children comfortable. It is a great aromatherapy essential oil dispenser is an intimate and convenient gift that everyone can benefit from. Whether in summer or winter, indoor air humidification, the air quality of our breathing is refreshed, so that the indoor temperature is adjusted.