SRD:Bracelet of Friends
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Bracelet of Friends: This silver charm bracelet has four charms upon it when created. The owner may designate one person known to him to be keyed to one charm. (This designation takes a standard action, but once done it lasts forever or until changed.) When a charm is grasped and the name of the keyed individual is spoken, that person is called to the spot (a standard action) along with his or her gear, as long as the owner and the called person are on the same plane. The keyed individual knows who is calling, and the bracelet of friends only functions on willing travelers. Once a charm is activated, it disappears. Charms separated from the bracelet are worthless. A bracelet found with fewer than four charms is worth 25% less for each missing charm.