In light of his ever-expanding reputation and fan base, Martin collaborated with John Mayer on the creation of a second namesake guitar, one with many of the same attributes as his first OM-28JM Limited Edition, but one that would be more affordable and more widely available in the tradition of the popular Martin 000-28EC Eric Clapton model. This tasteful Orchestra Model exhibits versatility for today's diverse contemporary musical styles. • BODY SIZE: 000-14 Fret • FINISH TOP: Gloss • CONSTRUCTION: Simple Dovetail Neck Joint • BACK & SIDE FINISH: Gloss • BRACING PATTERN: X-Brace • SCALE LENGTH: 25.4" • BRACE SHAPE: Scalloped • FINGERBOARD WIDTH AT NUT: 1 11/16'' • TOP MATERIAL: Engelmann Spruce • NECK SHAPE: Low Profile • BACK MATERIAL: East Indian Rosewood • NECK TAPER: Standard Taper • SIDE MATERIAL: East Indian Rosewood • ELECTRONICS: Fishman Gold Plus Natural I • RECOMMENDED STRINGS: Authentic Acoustic Lifespan® 2.0 Light - 92/8 Phosphor Bronze MA540T