The sound hole is not on the front like most guitars, it is on the back surface, which is a rare design. This invents a softer, more diffused sound and provides the Gwi a distinct tone. The Gwi is played seated. The right hand plucks the strings like a lute or small harp. Then, the left hand presses the strings on the frets to change pitch. Style involves both rhythmic strumming and melodic fretting. The sound is delicate mid-range, and ideal for traditional Mon music or storytelling.

It has 21 inches of body length, and 11.75 inches of body breadth. The leaf-shaped body is carved from hardwood. The interior is hollowed for sound resonance. The seven frets are measured and fitted carefully. The two bridges were installed to stretch the strings, as well as the three silk or nylon strings are attached.

To sum up, the Gwi is deeply tied to the Mon identity, representing traditional craftsmanship and musical expression. It is played in folk songs, ceremonies, and community gatherings. Its unique back-sound hole and leaf design make it one-of-a-kind in Southeast Asian musical traditions.