these are the sounds found in most native Oromo dialects:
there are also sounds not on the chart

Other sounds:

a labio-velar central approximant [w]
[p], [b], and [z] in loan words
dental/alveolar voiced implosive
ejectives [p'], [t'], [c'], [k']
long counterparts of all vowels

(from: Mann, Michael and Dalby, David. 1987. A Thesaurus of African Languages: A Classified and Annotated Inventory of the Spoken Languages of Africa.. London: Hans Zell Publishers.)