The Nanocuff is a device that Viluy wears in all versions of Sailor Moon. In the original anime, it is used to control her nanobots. She used it to operate the super computer to extract students' Pure Hearts through the computers. She also used it to unleash nanobots on her enemies, Mosaic Buster, who would continue to chew away the body, leaving nothing but the crystal hearts left. When Viluy fought the Senshi, Sailor Moon damaged the Nanocuff. When Viluy tried to use Mosaic Buster, the nanobots attacked her instead, destroying the cuff, and super computer, releasing the crystal hearts and the bots destroyed Viluy, leaving only the cuff behind before it turned to dust.