Building upon the success of the previous 2 generations, the new adapter and firmware has a big mechanical upgrade over the previous model.Big Upgrade Weather Sealed Design Compatible with Sony La-EA5 Adapter Adds Manual Lens Focus ConfirmationNever SaferWeather Sealed rubber ring designSet You Free Dust-proof, Water-proof, Slip-proof. Nothing Can Stop You from Getting Your Shots!Adds manual lens focus confirmation promptEven if this is a manual lens with no electronic contacts. Even if its a stack adaptation.Compatible with Sony La-EA5 AdapterSony A Mount Lens on Nikon Z Camera with Autofocus? Made possible.Patented Lens Release buttonQuick and Easy Release Button. Durable Stainless Steel Material.Electrical ContactImproved Durability, Prolonged Electrical Contacts Life. No more contact issues after long term usage.