Recently, I have my third pendrive which which is of Sandisk 16GB. Its cost was very low as compared to other brands like HP. So, I bought it for 250rs only from a shop near my home. In the beginning, it worked really well. It worked very fastly and there was no any problem in installation of programs. It is very easy to use. But after a month, it stopped working. Whenever I insert it into laptop, it inform me to format the pendrive. I did it but it again started to showing the same error message again. After that I went to that shop and then he said that he is not responsible for this defect. He said that he had received many pendrives from the customers complaining the same error message. It was totally a waste of money for me. So, I had decided to not to buy this rubbish product again.