Remote control--- The effective distance of the remote control is 3m, the remote control is powered by a 3V CR2025 button battery (battery is included). All these functions can be achieved by pressing the buttons on the humidifier or remote control. Capacity 400ml & BPA Free---Large capacity and more fog. Working time up to 10 hours. Refreshes and hydrates the air for rooms from 20 to 40m. The diffuser does not contain BPA, it is safe for children and pregnant women. Spray Conversion--- You can realize continuous and intermittent spray, large mist and small fog switching. You can easily set the time (1H / 3H / 6H / ON) via the controller. Variable Color Light--- You can choose to cycle these colors automatically or choose any type fixed color. In addition, you can adjust the brightness of the light. Auto shut-off --- When the water runs out, the diffuser will automatically turn off.