The Logitech Deluxe 660 Cordless Desktop is a simple wireless keyboard and mouse. The USB receiver is great for general use and is sufficient for the average PC user, as the range is pretty good and generally works even if the receiver is hidden away. Installation is very simple and easy, you just plug in the receiver to your USB port, insert batteries into the keyboard and mouse and you're ready to go. The only problem with having a USB receiver is that in certain motherboards (including mine) the advanced user cannot access BIOS functions because the USB ports aren't activated until after boot-up, and this can cause problems when trying to upgrade hardware.
AAA batteries power the wireless keyboard, and while other people have said the battery life is very long lasting I find that after a month of daily use the keyboard starts to miss letters as you type, and you have to press the letter a few times before it works. This can be very frustrating but a quick change of the batteries rectifies this problem, so I am putting it down to the battery power being low. The mouse uses AA batteries, and the battery life of these are even shorter so I have resorted to using a generic mouse that I had lying about. Generally I think the battery life is poor but bearable for the average user.
The keyboard is bulky and the buttons are pretty stiff, and the basic choice of button functions make this a bad choice all-round for the average gamer or advanced user. Saying this basic users will find that the CTRL functions are written on the bottom of keys (such as CTRL + Z for undo, "undo" is written on the "Z" key) and are very useful if you need a reminder of keyboard shortcuts.
In general, the wireless function is very nice to have and can be handy for basic users, but sometimes basic wired set-ups are better compared to this budget option.
When purchasing a new desktop PC I decided to go for a wireless keyboard and mouse this time round. While the Logitech Deluxe 660 Cordless Desktop works very well and the battery life is good, I can't say it really makes much different to having a wired keyboard and mouse when you are sat at your computer desk. The wireless functionality works very well, you simply plug in the USB receiver and place it somewhere on your desk and both the keyboard and mouse will work. I often knock the receiver off the desk without realizing but the wireless still works even then which is great. The keyboard takes AAA batteries and last a very long time, I have only changed them once in the last 2 years. The mouse takes AA batteries and don't last as long as the keyboard but still only need changing every 3-4 months (my PC is used daily). The keyboard is quite a large thing and not much to look at, also it is not very comfortable for people like me who have bad typing habits and use their wrists to lean on. Overall, if wireless is required then this is a cheap option that works very well, if not then just stick to wired technology to save on battery costs.
The Logitech Deluxe 660 Cordless Desktop is ideal for any computer or notebook. I personally have it with a notebook stand to create my own work space at home which I find makes things easier to use than just using the notebooks mouse pad and keyboard. It easily plugs in via usb and works strait away with no set up. It has hot keys for mail, internet and calculator that all worked with no mapping as well as keys which can, when holding the FN key, pause/play , mute, and alter the volume. For people who are unfamiliar with the ctrl key the keyboard shows what certain keys do e.g. the z key has undo written on the side of it as when used with the ctrl key it will undo. Another major benefit of the Logitech desktop is the fact that it is wireless making it easy to move around the desk and tidy away when not needed and meaning you are never restricted by wires. Overall I quite like the Logitech desktop and find it very easy to set up and use and think it is good value for money.