Works as advertised, does exactly what I need it to do. Very happy with this purchase. Will definitely buy again. Reasonably good wireless range.
My requirements are, Logitech, not Microsoft, stock keyboard with as few "special" extra buttons as possible, and standard mouse without any sharp edges or ergonomics or unique designs. I just want a keyboard and mouse that feels the same as any other keyboard and mouse, because I move around to so many computers, if there's all kinds of different keyboards and mice, all it does is slow me down.
My keyboard and mouse are not far from the computer. But between them, I have a security camera DVR, an audio console, my LCD screen of course, a laptop, CDs, extra hard drives that I'm working on, and etc. This wireless is not interfered with by any of that.