PFSRD:Righteous Fist Amulet
From D&D Wiki
|This material is published under the OGL|
Price 4,000 gp; Aura faint transmutation; CL 4th; Weight 1/2 lb.
This golden amulet is used by religious sects as a way to help the faithful capture fugitives or defend themselves without doing undue harm to potential converts. While the wearer is using her divine powers of retribution (such as a cleric's smite, an inquisitor's smiting judgment, or a paladin's smite), the amulet grants her the ability to make unarmed strikes in melee combat as if she had the Improved Unarmed Strike feat.
Cost 2,000 gp