The CT20 attaches securely to the headstock of your guitar or bass, as well as a variety of other stringed and wind instruments, for hands-free tuning. A dual 360° ball-jointed clip stems from the rear of the tuner, allowing you to view the display at any angle. In addition, the tuner’s design includes a large, full color LCD display for quick tuning in any lighting environment. With the goal of keeping your instruments sounding performance-ready at all times, the CT20 is packed with comprehensive tuning capabilities. It allows a wide range of calibration from A 410 to 490Hz, while its smooth, real-time display provides precise and accurate tuning. The unit offers chromatic, guitar and bass tuning modes, as well as a built-in mic for tuning your instruments via audible sound and a piezo (clip-on) sensor that calibrates by vibration. The CT20 also features a flat/drop tuning/transposition setting that allows you to easily tune down your instrument.