Clip-On Pick Up Microphone, picks up the vibration of the instrument without being affected by the sound of other instruments or the noise around you. Helps musicians of all kinds, from saxophonists to guitarists, stay in tune. This specially designed mic has an ample 1.2m cable length that you can plug into your line-level socket of your regular tuner, and supports accurate tuning by capturing the vibration directly and avoiding any interference.