Treated with Cleartone proprietary technology to bring you the longest possible string life.
Martin SP 7600 12-String Phosphor Bronze Lifespan Coated Acoustic Guitar Strings Extra Light are treated with Cleartone proprietary technology to bring you the longest possible string life without sacrificing tone or natural feel. Martin SP Lifespan strings are designed to repel the oils and dirt that can deaden strings. All six strings are treated to preserve the natural Martin SP sound and feel that players prefer.
The SP core wire is engineered to hold tunings better than other brands and resist breaking, and with rich full tone and responsive attack, SP strings are perfect for everywhere from studio to stage. Treated with Cleartone® proprietary technology, Martin SP LIFESPAN string sets bring players the longest possible string life without sacrificing the legendary tone or natural feel for which Martin Strings have become known.