GASKET Design - The body structure differs from traditional screw fixing by using precision-locked covers with gaskets to assist with noise reduction and flexibility. It provides even feedback while the vertical cushioning reduces rigid noise, delivering a crisp, clean and softer typing feel. 3-Mode Connection - Geared with Redragon advanced tri-mode connection technology, USB-C wired, BT 3.0/5.0 & 2.4Ghz wireless modes which make the user experience upgraded to another level in all fields. Custom Leopard L Switch - With thick-lubed custom linear switches combo with a gasket form factor, K686 PRO features cushioned rich linear travel with silky creamy and cozy typing feedback. The brand new upgraded socket is nearly all switches(3/5 pins) compatible. Noise Dampening x 5 - Equipped with 3.5mm PO foam, IXPE switch foam, PET sound pad, bottom socket foam, silicone bottom pad along with the silicone gasket. Significantly reduce the hollow noise, creating dampened and ultra-clean typing aco