I just received the sing sing box today,
I read the instruction and i dont even understand,
can somebody help me and explain it? Thanks alot

I have one that I purchased quite some time ago from a local shop and not from Penguin; so I can only assume the instructions are the same. While my instructions were poorly written and brief, the use of the device should be pretty apparent upon examining the gimmick. Try palming the gimmick as you would a coin when handling the ring or other item you intend to end up in the ring box. Make the item vanish in "your favorite" manner, reach into your pocket and retrieve the ring box with the ring inside. Palming the gimmick should make the rest of it fairly easy. The hard part would be in vanishing an item while palming the gimmick. Another method would be to have the gimmick in your pocket with the ring box. Vanish the item using your favorite method with "clean" hands. The use of the gimmick, since it is stationary in your pocket, may require some suspicious movements or look like you're fumbling. But even so, the revelation of the item in a tightly-sealed container will negate any minor fumbling that you may encounter or require.

Sorry...but explaining anything in greater detail would be exposure and since the trick should be self-explanatory with the inspection of the gimmick, then I can only suspect that it isn't the method you do not understand, but the means by which to handle the item so as to be effective with it. That, I'm afraid, is also simple; but requires practice and the application of your own timing and style. Good luck.