If the RXIII is anything like the RXII, dont get it. I am very disappointed in my RXII. Me and my hunting buddies all have different range finders. We will all stand at a certain distance away from our block target, and see if everybodys range finders read the same distance. Everybody body elses picks up the target, mine wont. It will pick work on a tree, or building, or the ground, if im in a tree, but it wont pick up my target.