It has Logitech exclusive LIGHTSPEED wireless technology, HERO next-generation 16000DPI sensor, can adjust weight and balance according to personal preferences, and programmable buttons up to 11. Other configurations are mainly LIGHTSPEED wireless technology, compatible with POWERPLAY wireless charging, dual-mode Metal hollow wheel, it supports LIGHTSYNC RGB lighting as well.
It’s a little bit heavy, but the hand feel is really good.
So, do you like this classical gaming mouse?
Jason 
Skanda 
Vivian Wu