This is the portable ultrasonic diffuser and humidifier that freshens stale hotel air while adding soothing moisture. The water is atomized into extra-fine particles and released as cool vapor to keep the skin hydrated and alleviate dry eyes, scratchy throats and snoring; two to three drops of essential oil may be added to the tank for a calming scent. Small enough to pack in a suitcase at a discrete 6" high and whisper-quiet, the device can be set for continuous or intermittent misting. The 120 ml capacity covers a maximum of 200 square feet for up to six hours; the unit is automatically shut off when the water level is too low. USB cable and AC adapter included. 6" H x 2 1/2" Diam. (1 1/2 lbs.)