I have have this keyboard for about 7 month now , and it have be wonderful . I use it along with my Arch Touch mouse from Microsoft , and it make a great combo . it be smaller than most keyboard , but they do not change the keyboard size . it be actually quite comfortable to use compare to a standard flat keyboard . I have not have to change the battery in the 7 month that I have own it and it be still go strong . the key be quick and responsive , and it clean easy with a slightly damp towel . it would be nice if the receiver could be use with the Arch Touch mouse instead of need a receiver for each , but since most computer now have so many usb port , it be hardly a issue .