SRD:Belt of Dwarvenkind
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Belt of Dwarvenkind: This belt gives the wearer a +4 competence bonus on Charisma checks and Charisma-based skill checks as they relate to dealing with dwarves, a +2 competence bonus on similar checks when dealing with gnomes and halflings, and a –2 competence penalty on similar checks when dealing with anyone else. The wearer can understand, speak, and read Dwarven. If the wearer is not a dwarf, he gains 60-foot darkvision, dwarven stonecunning, a +2 enhancement bonus to Constitution, and a +2 resistance bonus on saves against poison, spells, or spell-like effects.