I have several of these... at home, at the office, and use them daily. Being a geek with multiple computers, I've used a lot of keyboards over the years, and I've been through countless wireless combos looking for one that works consistently and reliably. This combination is easily the best I've used to date.First of all, the keyboard takes up minimal space on the desktop. The keys are full-sized, but there's no wasted space as there is on so many other keyboards. Some additional functions keys, like a Sleep button, Volume Mute and Raise/Lower buttons, and Play/Pause, Reverse, Forward buttons are included. The top row of function keys are half-sized, but I don't find that to be a problem. The keyboard has a great touch for those of us who are speedy touch typists, and the keys are designed such that dust, crumbs, and whatever else comes along doesn't fall into the keyboard. I understand it is also spill resistant... I can attest to that; minor spills have no impact and can easily be wiped off without damage to the keyboard. Major spills are another thing... the reason for this purchase is because I managed to dump a full cup of coffee directly onto the keyboard. That killed it, needless to say.The mouse part of this combo is nice... left and right buttons, plus a scroll wheel that also serves as an additional button. The mouse is comfortable to hold, is optical and requires no pad on non-reflective surfaces. Low batteries are indicated by a light on the mouse, and changing them is simple.The wireless portion of this setup involves a tiny USB receiver that plugs into your system. There are no extra drivers required, no CD's to install, and no pairing to consider. Out of the box, you can plug in the receiver and turn on the power buttons on the mouse and keyboard, and after booting the first time they're ready to go. I've not had any problem with distance, interference or such issues. My system sits on the floor under my desk, and I have no problems with connectivity. I've used this combo with several different systems, including non-Dell systems, with no problems.Battery life on both devices is excellent... I use my keyboards daily, and typically the 2 AA batteries last at least a year. With the mouse, I tend to change them every 6 months. I do not turn off the power on either device.Again, for those looking for a good, reliable and comfortable wireless keyboard combo, this is it. I have no hesitation with this recommendation. I have 6 of these combos in use currently, and the only one I've replaced is the one upon which I spilled coffee.