Using this Mumeiken Kyomu is easy. First, to start the transformation, just press the trigger. It's like you're really becoming a powerful character. After that, if you want to enjoy different sound effects or hear some cool dialogue, press the button on the blade. There are two versions, Japanese and Chinese. The Japanese one has a bit more length and more dialogue and BGM. When it comes to maintenance, keep it in a dry place to prevent any damage. Don't try to force the trigger or the blade button too hard as it might break. Also, since it's mainly for role - play, handle it with care to keep it in good shape. And remember, shipping is free within the USA.