Self Stirring Mug - Totoro Cat & Ryuk Death Note Anime Mug for All Anime Fans

I was so excited about this purchase as my boyfriend is into anime and I recently got him into drinking tea. So this would allow him to easily mix his sugar and/or honey. He used it once and thought it was a pretty cool concept. However after using it one or two times more it stopped working, so I had to return it. I would have kept it had it remained operational but it does not appear to be a stable product .