L1 users: 10,500 (CIP-EY 2002). Some monolingual older adults. Ethnic population: 10,500.
Pingtung and Taitung counties: west of Taitung city, 13 or 14 villages in south central mountains.
Budai, Labuan, Tanan, Maga, Tona, Mantauran. Mantauran, Tona, and Maga dialects are divergent.
VSO; 23 consonants and 4 vowels containing length contrast (Tanan dialect).
Latin script [Latn].
Some linguists classify it as Paiwanic. Paiwanic influence.