Guitar Trainer Practice Acoustic Guitar Accessories Chord Buddy 21 chordsOverview: 1. Practical The chord learning tool can help you to learn the chords by the different colors button, easy to remember, no pain for your finger. It owns about 30 kinds of different pressing ways, covering almost 99% of songs. 2. Training function The chord learning tool can help you to do the right hand posture when you use it, practice hand muscle memory. 3. Easy to install Install the chord learning tool by just clipping on the guitar