The ERNIE BALL 4112 Flex Tuner Clip-On is a must-have accessory for any guitar player. This tuner features a clear LCD display that helps you easily tune your guitar to the right pitch. With a flexible design, this clip-on tuner can be attached to your guitar's headstock or any other part of your instrument. The ERNIE BALL 4112 Flex Tuner Clip-On is designed to provide accurate tuning without any hassle. It is powered by a long-lasting battery, ensuring that you have a reliable tuning tool whenever you need it. Whether you're a beginner or a seasoned professional, this clip-on tuner is an essential tool for any guitar player.