This Pocket Pikachu has been tested and works great! I replaced the battery and it’s almost good as new. It’s the Japanese version.
Please note that this one seems to have a darkish screen.
Walk with your Pikachu and collect watts! Then you can either give those to Pikachu, or you can gamble them for a chance to get even more! But be careful and don’t gamble them all away. The more watts you give your friend, the happier he becomes!
Japanese version displays Japanese text, but is otherwise the same.