This unit was brand new but the pre installed batteries blew up in it. Everything works but the battery compartment on the keyboard is coroded/rusted. One of the metal prongs broke slightly when cleaning. Keyboard works you just have to set the batteries in there a certain way to make sure they are touching the metal. Ther battery in the mouse didnt explode but I threw it out anyway.
Hard to find them and it is what I need since I am not able to use a normal 101 keyboard effectively.
Was a good price and fast shipping.
Works very well and I am more than grateful!!