Logitech Mouse is extremely good product to use. We are highly satisfied and depend a lot on the same. It is very smooth and connects very fast without any problems. Compatible with all the Laptops and user friendly. Consumes very less pencil cell and had also got on/off switch to save on battery life in the mouse. Looks are fine and smooth to handle for long hour workings very comfortable, I highly recommend the product and urge all to but it. They have lot of service centres across India and if needed be; I have heard that problem will be resolved at the earliest.