The V3 Crystal Pro switches are a part of Akko's new V3 Pro product line. To start off, they are now 5-pin switches with dust-proof stems. They both increase the stability of the switch when you are using it. The contact pin is also being upgraded from silver pins to palladium gold pins. The leaf spring is now made of alloy copper instead of phosphor copper. Also, the V3 Crystal Pro switches are the only full polycarbonate switch that Akko has. They are great for RGB if that is what you prefer.
