This guitar exerciser is a perfect tool for finger placement exercises. Features: Built-in rotatable screen with built-in chords that helps guitar beginners and students develop muscle memory for chords. Equipped with real guitar strings to assist in practicing chord formation. The tension of the strings can be adjusted using the included tools to suit individual preferences and optimize the user experience. Integrated metronome allows players to practice chords at a customized tempo. Compared to full-sized guitars, this exerciser is compact and portable for use anywhere. Silent design ensures no noise or interference, making it convenient and practical for practice. Specifications: Material: ABS, wood, electronic components Battery model: CR2032 (not included) Package size: 300 x 60 x 45mm / 11.81 x 2.36 x 1.77in Package weight: 240g / 8.46 ounces Note: 1. Due to differences in display screens and lighting effects, the actual color of the item may vary slightly from the images shown. 2. The battery is not included and must be purchased separately. Package List: 1 x Chord Exerciser 1 x Hexagonal Wrench 1 x Cloth Bag 1 x User Manual