GX&middot;Diffuser Ultrasonic Cool Mist Air Humidifier for Bedroom Baby Home, Ultra Quiet with 6 Optional Night Lights Multi Modes, 3.5L Filter Free, Blue Ultrasonic cool mist humidifier with 0.9 gallon capacity runs 20 to 36 hours of continuous operation (depending on mist control setting) so you can breathe easily and sleep better Longer mist stream provides perfect coverage and leaves no condensation on the floor. Suitable for bedrooms, medium-sized to large rooms. Premium material helps suppress mold growth- works best with distilled water. Deep groove Design greatly reduces leakage and increases resistance To compression. No worries about leakage and base crack Super quiet function always ensures you a peace of mind for overnight use.