They are only 2 years on the electronics. But as typical with Leupold, they will likely take care of you if need-be. A co-worker had his crap out at about 3 years, Leupold gave him a gift card for the original purchase price.
Keep in mind that even in good conditions range finders will usually range a non-reflective animal to about half the distance the finder is "good" to on "reflective" items. Them reflective critters are hard to find in the wild..... .
Leopold seems to be slightly better. I've ranged caribou to a bit over 500 with my 800si. The Nikon 400 has had trouble ranging a moose a bit over 200, but I've ranged birch trees or white rocks to 350 or so with it. Once I even nailed a big white rock at 420.
Definitely get the 1200 if you want to shoot animals to 700 or so.
I have a RX1000TBi, it is very accurate on reflective surfaces, a bit less on non reflective surfaces. I run black angus cattle, and on a nice clear day with some cloud cover, it will range to 900yrds without trouble, half that in poor weather or at night with mist about. I am very happy with it for what I use it for, mostly pest destruction and deer hunting thrown in.
i borrowed a leupold range finder for a hunting trip and you had to be super steady to get good readings.I finally bought my own after reading about different rf's and settled for the sig so far it is amazing it will read with being a little shaky.So far i've ranged cows at 900 yards and a building at 1100 yards.The deer are still herded up and haven't seen them while having it with me.