The Korg CA-50 packs high-precision tuning into a convenient pocket-sized design. Its predecessor, the CA-40, has been a top-selling chromatic tuner for more than a decade. The CA-50 builds upon that legacy while adding a more readable display, improved battery life, and a mechanism to prevent the tuner from sliding off of your music stand. You also get all of the great features you've come to expect from Korg, such as a wide detection range, easy calibration, built-in reference tone, pure major/minor third interval markers, and memory backup. Ideal for orchestral instruments, the CA-50 is an excellent portable tuning solution. High-precision LCD needle-type meter for stable tuning Wide detection range provides support for nearly every instrument Adjustable calibration range (410–480Hz) Pure major/minor 3rd pitch indication marks Built-in reference tone is ideal for ear training Up to 135 hours of battery life Mechanism to prevent the tuner from sliding off of your music stand Auto power-off function and memory backup