Yamaha FS5 NT, Steel-String Guitar, Design: Concert, Top has been treated with A.R.E. (Acoustic Resonance Enhancement), Back & Sides: Solid mahogany, Top: Solid spruce, Neck: Mahogany, Fretboard: Ebony, Fretboard inlays: Dot, 20 Frets, Nut width: 44 mm (1.73