T12 - Digital Guitar / Bass Tuner The HT12 Hartke tuner and its large LCD display make an easy chore of tuning your guitar, bass, or even violin. Its small compact design makes it perfect for storing in your instrument case, gig bag, or back pocket Features: Chromatic, Guitar, Bass and Violin Modes 6 and 7 string guitar settings 4, 5, and 6 string bass settings Adjustable pitch: A433-A447Hz LCD display with analog-style meter Pitch Control +/-50 cents Powered by two AAA batteries (included)