I have an EOTech 552.A65 that I am looking to sell. I love this optic but need some cash. It is in like new condition and works great. I unfortunately have only the optic and the batteries in it as I seem to have lost the box in a move. If you really want a manual for it you can easily download it from their website. It takes AA batteries instead of the less common CR123's and has the night vision setting. I mounted it on my gun, sighted it in, used it a couple of times and that is about it. $400.