Its a personal cooler and its a value for money product I am using this product from past 2 years this product give me a big relief in summers where I get completely exhausted by doing my work but with this cooler exhaustion is prevented. It has got a speed control and the motor in this cooler is a copper coiled motor. Which is a very good thing. No issues with the school until now the company claims that they provide 2 year warranty but there is no problem till now so the warranty is not used by me. The customer service of this coolers company is nice and they are very responsive. It makes a sound but it is not annoying Kula will not be complete silent it will give some noise but this noise is negligible. Its a complete value for money package and I am very satisfied with this cooler I am using this cooler from many one and I dont feel any trouble with this.