The instructions state it will range past 2,000yds on reflective targets, 1,500 on trees, and 1,200 on deer
The three objections I have with it are the aiming circle is too large, the glass could be better, and there is no attachment for a tripod. Long Rifles Inc makes an attachment for it so you can attach a tripod though. All in all I believe it's an excellent range finder for +/-$400.
I'll give it a good test in October when we're after antelope in Colorado.
If you're looking for a good range finder check out the Sig.