To use this head piece, first make sure you have your SH Figuarts Dark Kabuto figure. Since the battery and magnet aren't included, you'll need to get them separately and install them according to their instructions. Then, simply attach the head piece to the figure. When you're done using it, keep it in a dry and clean place to prevent any damage. Avoid dropping it as it might break the LED or the sculpt. Also, be careful when handling the magnet to prevent it from attracting other metal objects and causing scratches.