Cosmetically not so great (usage marks, sticky keys), works flawlessly otherwise. Works on two AA size batteries which last for more than 2 years. Have upgraded to a higher end version of the same keyboard so selling this.
its not like any particular key is stuck. It just takes slightly more effort to press the keys. They don't move up and down as freely as they did, when the keyboard was new. All the keys work fine, however. No issues there.