Have bought the keyboard for my HTPC. Distance is about 3 meters and both the keyboard and the mouse works fine !!! The mouse is in relation to other mice I've tried, a little small, but not annoying. For 8 hours daily computer work, I'd like to use the mouse, because I have large hands and that is unpleasant in the long run. For the "standard computer" users, this keyboard is however the nuts and bolts! Super reception quality, great keystroke, what more could you want? I buy for years ONLY Logitech peripherals and I've never had a problem with a device, or if they did, then the support was deserted tip!