this be by far the best keyboard that I have ! the battery life be great , give it have a backlight , and it come with a micro-usb charger , allow you to charge it overnight , or while you be use it . I would say you have to charge it about every week or so , and fully charge it when you first get it . the back light have 4 level of brightness and be useful for typing in the dark . the logitech k800 be a big step up from my old , simple , wire  Logitech Keyboard k120  I use it with my custom build Windows 7 64 bit desktop pc and it work fine -lrb- I be typing this review with it ! -rrb- . you do not need any driver , but I recommend that you download the free software from the Logitech website . the software allow you to customize the function button , what activate the back light and how long it stay on when you be not typing . also , it do not seem to miss any type letter so , overall , the Logitech K800 Wireless keyboard be great . if you want a wireless keyboard with a back light , this be for you . ------------------- edit 4\/28\/2012 -------------------- the keyboard have hold up pretty good , but the key be start to squeek . I be suprised how fast they start squeek , but overall it seem to be ok . I do not use the backlight much , and only have to charge it every 1-2 week .