Here' s the response I received back from Cabela' s;

" Hello James,

The Alaskan Guide scopes offer a Limited Lifetime warranty. They are 100% waterproof as well. Enjoy your new scope you have made a good choice. If you have any other questions please feel free to e-mail us back we will be more then happy to assist you!

Thanks for using Cabelas.com Have a Great Day!

Jeff "

They have excellent customer service and they replied to my email within 24 hours so that' s a thumbs up for me. Seems worth taking a look at for sure to me.