I was not convinced by seeing that little ball in photo, but once in the hands, it's great !! An hour to run a successful correctly, I abandoned bankrupt, saying it not work, but it was not ^^. A video on the "you" of "tube" has helped me do counter fonctionner.Pas, but apparently you can add one. Really love this little object. I intend to take with me another counter and automatic start or sem-automatic (I know ^^).