D Addario electronic tuners are designed by musicians for musicians featuring intuitive features easy-to-read displays and exceptional tuning accuracy. Affordable no longer means compromise. Introducing the D Addario Eclipse Tuner-the modestly-priced tuner with unparalleled performance. The Eclipse chromatic clip-on tuner offers fast accurate chromatic tuning on and off the stage. 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.