From Martin:

“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.”

Natural, 000-14 Fret body shape, Solid Engelmann Spruce top, Scalloped X bracing, Abalone with multi-stripe Rosette, East Indian Rosewood back and sides,Zig-Zag back purfling, Grained Ivoroid binding with the Bold Herringbone top and multi-stripe back inlay, Ebony fingerboard with the custom Mother of Pearl position markers on a low profile w/standard taper shaped select hardwood neck, 25.4 scale length, 1 11/16th nut width, With the Martin Gold Plus Natural 1 pickup system and hardshell case