Martin Lifespan 2.0 strings are engineered using a patented technology only available from Martin. This technology was developed to protect the core wire and the wrap wire to prevent corrosion without compromising tone -- the single most important attribute of the guitar strings. Authentic Acoustic Lifespan 2.0 strings look better, sound better, and feel better, providing a smooth playing experience that reduces finger drag.

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They invested two years developing Lifespan 2.0 strings to ensure they will sound better, longer than any other extended-life string on the market.

Martin Authentic Lifespan 2.0 Treated Phosphor Bronze 12-String Acoustic Guitar Strings offer next generation treatment for long life, great playability and feel, and superior reliability with authentic tone.