A bracelet was a piece of jewelry worn around the wrist.
On a planet in the universe of superspace, Kyr Nostrand made a bracelet out of little stones or pieces of colored glass he found. The bracelet meant a great deal to him, and gave it to his lover Rhuna just before his death in 2267. Unknown to either of them, one of the parts of the bracelet was the mind module of the war machine which had ravaged their world, enabling the vegetable metalloids to locate and attack the city of Caeminon. Captain James T. Kirk noticed that part of the bracelet glowed whenever the creatures were near and destroyed it with his phaser over Rhuna's objections. (TOS comic: "Siege in Superspace")