Logitech's G502 X Lightspeed gaming mouse comes equipped with the HERO 25K optical sensor with an adjustable resolution of up to 25,600 CPI, Lightforce hybrid optical-mechanical switches on the main buttons, and a 4-way scroll wheel that can be toggled to spin freely.https://www.notebookcheck.net/Logitech-G502-X-Lightspeed-wireless-gaming-mouse-drops-to-lowest-price-yet-on-Amazon.766711.0.html
if u are working with AutoCad or some other software where u need to use middle click don't buy this mouse... coz middle click is very hard to press and it can go right and left so u can make a mistake very easy ... also coz of the hardness it is not precise and when u are working fast middle click don't hold whole time so u are drop view very often