Symphony is one of older company in India and it performing to good at those time with high power air coolers
which are small in size but big in performance, But I recently brought diet 50 I which is too big in price and small in performance it makes me feel bad when I used it, Because air through this cooler is not so heavy but light which is comfortable for single person use only, its storage capacity of water is good which long last upto 8HRS and the smart buttons given at top are good but when coming to its safety when water run through it leads to damage the board which is a bitter experience for meat the cost of 2000rs, may be the motor or technology used in cooler is low power consumption may be .
Overall the performance of cooler is good but low air and not value for money