The tuner features a full color vertical display, auto power-off, and pitch calibration in a discreet, compact design. The multi-swivel action allows for the perfect viewing angle and can be mounted in front of or behind the headstock on right- and left-handed instruments. Available in a variety of colors. CR2032 battery included. DAddario electronic tuners are designed by musicians for musicians featuring intuitive features, easy to read display's, and exceptional tuning accuracy.