Activeshield Technology - Eliminates 99% germs to give you healthy & cool air. 100% copper coils - More Reliable. High Durability. Blue fins coating - Prevents Corrosion. Self diagnostics - The unit shuts off automatically in case of abnormal operations or failure in parts. Turbo mode - Gives a boost in cooling and cools the room faster. Dehumidifier - AC will efficiently dehumidify the room. Sleep Mode- It enables the AC to automatically increase cooling 1℃ per hour for the first 2 hours, then holds steady for the next 5 hours. This function maintains both energy saving and comfort at night. Eco mode - AC will run into a 8-hour saving mode which cuts 60% energy off against normal mode. Swing Position Memory - Horizontal louver will automatically- move to the same position as you set last time when the unit turned on.