It comes from the city of Hue, where women used to play it for the nobility. It is still today considered a symbol of that city. Its surface is made of wood from wootung trees.
It has sixteen metal strings of different sizes, tuned to the pentatonic scale. It is also known in Japan as Koto, in Korea as Kayagum, in Mongolia as Jatac, in China as Zeng and in Indonesia as Kachap.
It is usually used to accompany poetry recitation, orchestras, chamber music, and religious music. It has a three-octave register, from C to C3.
It includes spare strings, tuning wrench, metal finger picks and gig bag.