3Dconnexion SpaceNavigator I was using this until yesterday, but I'm selling it because I bought a different one. I don't remember exactly how many years I've used it, but it's still usable. In the third photo, there are some small rust-like spots on the silver part. It will be handed over after a simple cleaning. Please understand that this is a used item and is non-refundable and non-returnable. Thank you for looking.