I'm using this mouse last one year this is more comfortable than other mouse and the mouse size is so better than other mouse and and the mouse is lightweight and the design is so precious and working very smoothly like a butter and the scrolling wheel is so smooth and the other is also smooth and the battery is very best working and the laser so best working for other and you can use faster than other I need you can use more faster than other like very fastly best moving and one thing is the on off button is so looking good and so smooth I like this mouse and I am giving to you advise you can buy only this one