This chromatic clip-on chromatic tuner will work on nearly every type of instrument guitar, bass, banjo, uke, mandolin, etc. If you can clip this to it you can tune it. Tuning range B0 to B7. It will quickly and accurately tune all acoustic and electric instruments. Uses vibration of your instrument for tuning and has a green screen "in tune" indicator display. The display rotates 360 degrees. The clip is a special "stay put" design. It is fast and deadly accurate. Uses a standard CR2032 Lithium battery (included). Reasonably priced. Reliable. Brand new. What more could you want in a tuner?