Tune your guitar with the Snark SN-3 Chromatic Guitar Tuner. Its easy-to-read color LCD clearly shows when your notes are sharp, flat, or in tune. A chromatic pitch pipe function is also on-board for reference. The SN-3 is optimized for accurately analyzing guitar frequencies and can be used with acoustic and electric guitars via the internal microphone or 1/4" input jack. Additional functionality includes a visual metronome with tap-tempo. Once the tempo is set, the heart-shaped LED will blink at the desired tempo.