The all-new Martin SP Lifespan acoustic guitar strings 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.
E 1st .012
B 2nd .016
G 3rd .025
D 4th .032
A 5th .042
E 6th .054