... controller, easy operation,steady performance.2. High voltage mute sound type nylon fan blade, big air output,low-energy consumption ... function.5. Automatic control water-supply system,open type water theif,divide water fluency,automatic clearing,no jam.water cooler :XK-18S Voltage/frequency ... ,Iseral,middle east,My,south asia,africa,spain.3.quality guaranty,we warranty for 1year,if any parts damaged ...