Features: Suitable for those who give up playing the guitar due to sore fingers, buzzing strings, or the need to grow calluses when directly plucking the strings. Equipped with 18 buttons and over 110 chords to choose from, including all basic chords. Learning tools can help you make gestures and practice hand muscle memory. Improve the efficiency of chord conversion and make the performances smoother. Easy installation: It can be manually operated, making it very convenient and safe to use, without injuring hands. Suitable for guitar enthusiasts, beginners, and everyone, it can also be given as a gift to family and friend. Specifications: Materials: ABS Auxiliary size: about 52x106mm/2.05x4.17inch Package Includes: 1pc Guitar Assist 1pc Guitar Chord Chart note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.