Our Case knives are authentic Case knives. We offer some manual Case Knives as well as some Case Knives that have been converted by professional knife customizers to be automatic knives that open by the push of a button via a custom made spring mechanism inside the knife. Since these authentic Case knives have been customized from their original configuration they no longer carry any warranty from Case Knives as they have been customized from their original configuration. Each one is different in it's own way and when they're gone, they're gone so make sure you get your order in today!!!