Tenor Ukulele from Kala Koa series with built in preamp. The Gloss Koa line is built from Hawaiian Koa, the most traditional of ukulele wood. The elegant curling of the Koa makes this ornate wood sought after by builders and players alike. The Gloss Koa line is built from Hawaiian Koa, the most traditional of ukulele wood. The elegant curling of the Koa makes this ornate wood sought after by builders and players alike. Scale Length: 17 inches, Overall Instrument Length: 26.25 inches, Body Length: 11.75 inches, Number of frets: 19, Width at upper bout: 7 inches, Width at lower bout: 9.125 inches, Width at waist: 5.5 inches, Body Depth: 3.125 inches, Fingerboard width at nut: 1.375 inches, Fingerboard width at neck/body joint: 1.875 inches. Preamp: UK-300T. Finish: Natural Gloss.