Martin MA140 Authentic Acoustic Superior Performance 80/20 Bronze Guitar Strings - Light 12-54 jatoba-fingerboard Tuning key holder

Tuning key holder

WW/CW/A Buttons: Adjust colors with the “+” and “-“ buttons

Warranty: 1 year with free extension to 5 years following registration

HDMI: HDMI 1

but with unmatched durability

Martin MA140 Authentic Acoustic Superior Performance 80/20 Bronze Guitar Strings - Light 12-54 jatoba-fingerboard Tuning key holderMartin Authentic Acoustic Superior Performance SP strings feature higher tensile strength and tin plated core wire on all six strings that enable a fuller and more balanced tone, quicker response and increased tuning stability. Our impeccable standards for acoustic guitar tone are embedded in our string design and precision manufacturing process. That's why we make our own.