The\u00a0Logitech Wireless Illuminated Keyboard K800\u00a0is a sleek, full-sized desktop keyboard that incorporates Logitech's proprietary 2.4GHz wireless technology to connect to your PC without any wires,\u00a0and its\u00a0backlit keys\u00a0help keep you up in running in dark environments. The keyboard's internal battery\u00a0can be charged\u00a0via a micro-USB cable (included)\u00a0for up to 10 days of normal use.\n\tThe real highlight of the Logitech Wireless Illuminated Keyboard K800 are its illuminated keys; the laser-etched backlit keys are simply gorgeous in a dark or dimly-lit room.\u00a0And Logitech designed the K800's backlight to be adjustable with five levels of brightness,\u00a0with the lowest setting effectively switching the backlight off.\n\tLike many\u00a0Logitech products, the K800 sports a streamlined design topped with a clear acrylic edge for style. An on\/off switch helps the keyboard last longer between charges,\u00a0and a three-bar battery gauge lets you know exactly how much juice you have left.\u00a0And proximity sensors help maximize its battery life by gently fading the backlight on and off based on the presence of hands hovering over the keyboard.\n\tThe keyboard\u00a0uses Logitech's Unifying receiver technology to connect to PCs via a USB dongle that you plug into your machine, and I was able to quickly pair the two\u00a0by launching Logitech's Unifying Software and toggling the keyboard off and on. Once paired, the keyboard worked flawlessly, with none of the intermittent disconnects I\u00a0often\u00a0experience with my Bluetooth\u00a0Apple Wireless Keyboard\u00a0and Windows 7 PC.\n\tThe keyboard\u00a0also uses\u00a0what Logitech calls "Incurve keys", which are essentially concave keys with rounded edges to help users easily position their fingers on the keys.\u00a0The company's\u00a0PerfectStroke key system ensures that typing force is evenly spread across the surface of each key,\u00a0and Logitech\u00a0says the system adds comfort and leads to nearly silent performance. I honestly\u00a0wasn't particularly impressed with the\u00a0Incurve keys, though I've grown to appreciate\u00a0the comfort of\u00a0the PerfectStroke key system . Similar to the "chiclet" keys found on laptops from Apple and Sony, the keys simply don't ever get "stuck" in the keyboard frame.\n\tAnd while nice, the illuminated keys\u00a0had little to no\u00a0effect on my typing. However, I don't doubt\u00a0their usefulness to late-night typist or people who like to\u00a0work\u00a0in dim environments\u00a0or with the\u00a0lights switched off.\n\tYou should, however, be warned that the illumination does take its toll on battery life.\u00a0In my experience, the keyboards lasts about\u00a0four to five days on average. This is less than the 10 days of battery life touted by Logitech, though\u00a0I've\u00a0probably used it more frequently than the average user would. With the backlight switched off however, I noticed a much\u00a0less significant\u00a0drain on the rechargeable battery.\n\tIf you're hunting for a backlit, wireless keyboard, the $100 K800\u00a0should meet your needs perfectly.\u00a0It's\u00a0also a solid option if\u00a0you want to switch from a Bluetooth keyboard to one that uses an alternative wireless technology.\n\tA three-bar battery gauge helps eliminate uncertainty about battery life. Note the On\/Off toggle beside it.\n\tThe height of the K800 can be\u00a0slightly adjusted.\u00a0\n\tThe laser-etched keys at its brightest settings.