I bought this dell MS111 approx 6 months ago and since then it has been working good . It is
very light in weight easy to move it’s optical is very good so that it makes the cursor to move freely in the desktop
even though it has been fell down so many times but still works good, I bought it for Rs 230 and it just has recovered my money at first I thought it will hardly work for a month because I am a gamer and using a normal mouse instead of gaming one made me to think this . But it is working great even sometimes I press the buttons hardly but it is not enough to damage it. Trust me use it once you will thank to dell hundred times.