Concert 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: 14.875 inches, Overall Instrument Length: 24.125 inches, Body Length: 11 inches, Number of frets: 19, Width at upper bout: 6 inches, Width at lower bout: 8.25 inches, Width at waist: 5 inches, Body Depth: 2.75 inches, Fingerboard width at nut: 1.375 inches, Fingerboard width at neck/body joint: 1.875 inches. Gig Bag included. Preamp: UK-300T. Finish: Natural Gloss.