Liquid necklace tubes

Liquid necklace tubes are clear tubes filled with self-replicating nanorobot-dense liquid used as a reward system for Aren'A gladiators. They served many functions, from providing infinite liquid refreshment to healing wounds to changing a fighter’s genetic makeup. The more necklaces a fighter earned, the higher his or her rank in the eyes of the Aren, and the more supplemental abilities he or she had in use on the battlefield.

Counterfeit necklaces were created by third party companies, but they were usually detectable and barred from use on Aren'A circuits. They were popular in the Aren'E, where no such restrictions existed.