C.F Martin & Co. (www.martinguitar.com) has been creating the finest instruments in the world for over 175 years. It continues to innovate, introducing techniques and features that have become industry standards including X-bracing, the 14-fret guitar and the "Dreadnought" size. One of the world's leading acoustic instrument makers, Martin guitars are hand-made by skilled craftsmen and women, who use a combination of new design and techniques along with those introduced by the company founder. The company is also known for producing high-quality, popular acoustic guitar strings. These include the Martin SP® LIFESPAN™ line - the fastest-growing treated string in the industry, and the Martin SP line - which uses an industry leading core wire to hold tunings better.