Features 1、Built‑in rotatable screen, reserves the most commonly used chords, perfect tool for finger placement exercise. 2、With steel guitar strings, the tension of the strings can be adjusted, convenient to use. 3、With metronome functions, can learn the chords with yourself customized tempo. 4、Lightweight, easy to carry and practice. 5、No noise and interference, convenience and practicality. Specification Features: 1.Built-in rotatable screen, reserves the most commonly used chords, perfect tool for finger placement exercise. 2.With steel guitar strings, the tension of the strings can be adjusted, convenient to use. 3.With metronome functions, can learn the chords with yourself customized tempo. 4.Lightweight, easy to carry and practice. 5.No noise and interference, convenience and practicality. Specifications: Material: Metal + plastic Color: Black Size: Approx. 29*5*4cm/11.4*2*1.6in Battery Model: CR2032(not incluced) Packing List: 1*Chord Trainer 1*Wrench 1*Carrying Bag Note: Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering. Package List 1*Chord Trainer 1*Wrench 1*Carrying Bag