Feature: 1. Only need to press the buttons and then play, easy and convenient to use and operate. 2. Rapid development, effective system, suitable for all ages, improve efficiency of chord conversion, can conduct smooth performance. 3. Only suitable for right‑handed guitars, the Maspol learning system can help you play C, D, G, Em chords. 4. Within a few weeks, you'll begin removing some of the tabs and making the chords on your own. 5. Small in size and light in weight, convenient to carry and use at any time, very convenient and practical. Specification: Item Type: Bundle of Guitar Accessories Material: Plastic and paper Product Type: Musical Instrument Accessories Product Style: Classic retro Guitar Chord Specification: Approx. 12 x 4.8 x 2.5cm / 4.7 x 1.9 x 1in Display Specification: Approx. 3.2 x 4.7 x 5cm / 1.3 x 1.9 x 2in Display Battery Type: CR2032 lithium battery 3V 190-230mAh (delivered without battery). Package List: 1 x Displayer1 x Chord10 x Pick1 x User Manual of Displayer1 x Chord Book Note: This version of the practice aid is currently not available for left‑handed, 12‑string, classical or half‑size (children) guitars.