I bought this symphony diet air cooler last summer for 6700 from my nearby shop and I am really happy with it. It has powerful fan which is capable of giving air for a long distance in every corner. The tank capacity is 8 litres which lasts for the whole night easily. It has three modes of operation high, medium and low. In the beggining I was very aprehensive in buying this air cooler as it is not like your conventional air cooler but after its use I liked it. If you place it at your feet or towards your head your whole body gets air perfectly. It also has a swing mode which is very helpful. It is a very useful product and I would recommend it to all.