+4 competence bonus on CHA checks and CHA-based skill checks related to dealing with Dwarves
+2 competence bonus on CHA checks and CHA-based skill checks related to dealing with Gnomes and Halflings
-2 competence bonus on CHA checks and CHA-based skill checks related to dealing with anyone else
read/speak/understand Dwarven
If not a Dwarf, you get the following:
60' Darkvision (doesn't stack, overlaps - e.g. if you had 30' Darkvision, it would now be 60')
Dwarven Stonecunning (no extra bonus if you already have it)
+2 enhancement bonus to Constitution (your Halfling will get this; it overlaps with any other enhancement bonuses to Constitution)
+2 resistance bonus to saves against poison, spells and spell-like effects (this will stack with your racial bonus, as the bonuses are of different types; it overlaps with any other resistance bonuses)
