Note: The mouse itself can only be used with optical jog,
if the mouse is not optical jog, it cannot be used!
Optical micro-motion of the second generation gray housing
The black shell is the first generation (black shell),
because the first generation of black (black shell) shells generally have no problem with the optical micro-motion key strength,
so Razer has updated and upgraded the second generation (gray shell)
The first and second generations are common, if your original mouse is not usable if it is not an optical jog!
The second-generation optical micro-motion Replacement for Razer
Naga Pro 20000 DPI/DeathAdder V2 pro/Basilisk Ultimate/Basilisk V2
Viper Ultimate/Viper/Viper Mini/Viper 8K Gaming Mouse … and many other mice that use Razer's optical micro-movement use this micro-movement
Durability of up to 70 million clicks—40% more than the previous best.
Package include : 2Pcs Optical Mouse Switch