Mugig Chromatic Guitar Tuner Pedal True Bypass for Guitar / Bass, Guitar Effect Pedal Connectable, 6.35mm Input Interface.
Precision tuning for guitar / bass tuning, fit for 6.35mm interference. Tuning range: B0-B7.
Its easy to use ,My son is learning guitar and is very interested in anything to make it sound better.He is 9 year old and with the help of Dad he is able to use this.Its well made and came well packed.