Quote Originally Posted by Arranzoa View Post
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* You can only receive one promise wristlet per application. Both you and your partner must have identical promise wristlets to undertake the quest "The Ties that Bind." You can either purchase wristlets separately, or one person can buy both and give one to his or her partner.

* Please be warned that, when equipped, these items can gain spiritbond. A promise wristlet cannot be traded once it gains spiritbond.

* In the event both you and your partner have different promise wristlets equipped, the wristlet of lesser value (standard < gold < platinum) will determine the service plan for both players when undertaking the quest "The Ties that Bind."

From here: https://www.finalfantasyxiv.com/eter...?lng=en&rgn=na