Planet Waves S.O.S. Guitar Tuner pulses two out-of-phase LED light beams directly onto the vibrating string. When the string is out of tune,  the two lights will visually dance on the string  being tuned. As you approach in-tune status,  the movement slows down and eventually stops when you are  perfectly in tune. This revolutionary visual tuning system  enables precision tuning in silent or noisy environments.

Features Include:
   • Ergonomic pick-sized design
   • Light-based tuning
   • Great for noisy or dark environments
 

Price includes free shipping to the continental U.S. and MacNichol's Risk Free Trial. Please contact us for more information.