From Martin:

The Dreadnought Junior is designed for players looking for big Dreadnought sound in a slightly smaller body. The DJr-10 features satin finished sapele back and sides in a rich cherry hue, an option of satin finished Sitka spruce or Sapele top, and a hand-rubbed neck with a high-performance taper. This model also sports a thinner 000 body depth with softer back edges to provide maximum comfort while playing. Every Junior includes a soft gig bag for easy transport.

Satin Natural, D Junior 14 Fret (000 depth) body shape, Sitka Spruce top, Scalloped X bracing, Mother of Pearl pattern with multi-stripe Rosette, Sapele back and sides, Black binding with the multi-stripe top inlay, FSC certified Richlite fingerboard with the Mother of Pearl pattern Style 28 Dot position markers on a dreadnought junior w/high performance taper shaped select hardwood neck, 24 scale length, 1 3/4 nut width, 3.8 pounds, With gig bag