The Hartke FT50 Chromatic Tuner makes accurately tuning guitars, basses, and other stringed, woodwind and brass instruments an easy task. The FT50 offers two modes of tuning: Auto and Manual. When using Auto mode, the tuner automatically recognizes the note to be tuned, while Manual mode allows the user to select the note to be tuned. The FT50 also features a multi-segment LED display for tuning in well-lit or dark environments. It also utilizes a built-in microphone for calibrating acoustic instruments and its 1/4-inch input and output jacks allow for the tuning of electronic instruments in or out of live performance situations. Conserving the two included AAA batteries that power the tuner, the FT50 features a convenient auto-shut off function if it is not in use for 10 minutes. Lastly, a compact design makes Hartke's FT50 Chromatic Tuner an extremely portable accessory, perfect for storing in your instrument case, gig bag or back pocket.