This air cooler is very very good.air coolers size is very quite.its air cooler like a small box.its looking very small and beautyfull.air coolers cooling system is very gorgious.and air coolers weight is very low.and quality is very nice.switching is very fast acting.its operate on ac and dc suppy so its very usefully during of when ac power is not available.its very compact so we can easily transport this air cooler.its air cooler is portable.i like this