Ultrasonic technology - Ultra high frequency atomizer produces the extremely small water molecules to medical grade,efficently relieves the unpleasant feeling of dry skin,cough,sore throat and blocking nose. Ultra-Low Mute - With Ultrasonic Humidifier, you will no need to worry about any distraction by the aroma diffuse when in home or office, and feel free and relaxed. Soft Lighting - The Air Humidifier has 7 color led lights (can be turned on/off) create a soothing effect.Color includes: White, Green, Purple, Pink, Blue, Yellow and Red. Convenience - This Mist Humidifier is only 225g, you can easy to be bring it anywhere, and the capacity is 400ml Water, which can fulfill one day requirement. distill water is highly recommended, and change the filter regularly, do not recommend you USB Chargeable - There are 3 modes of Humidifier to give power by PC/ DC/Powerbank,easy control atomization and light on/off or change color.