7 string nylon string. This guitar is the same specs as Robert's 6 string classical model but with the added range of a lower 7th string tuned in C or B. Indian Rosewood back, sides and bridge. Englemann Spruce soundboard, Spanish Cedar neck, Rosewood bindings with maple purflings, Swiss tuning machines with 18:1 gear ratio. French polished shellac finish. 650mm scale length with 60mm width at nut and 70mm at 12th fret.