Master chord changes with ease with our Digital Guitar Chord Trainer. Lightweight and easy to carry, it saves time and effort by eliminating trial and error. The adjustable tension helps improve the unity of dynamics and speed, giving you a surprise with your guitar skills. Specification: Material: ABS, Product size: about 3.6x2x23.6cm/1.42x0.79x9.29 inches, Retractable length range: 23.6-38.5cm/9.29-15.16inch, Type: Four-grid, Applicable battery: 1 button battery. Packing List: Guitar Chord Practice Tool*1 piece. Note: Due to different lighting and screen settings, the item color may be slightly different from the picture. Due to different manual measurements, please allow a 1-2cm difference in size. Easy Portability: You'll never have to skip a practice session again with our Guitar Chord Practice Tool. Its portable design lets you practice chords anytime and anywhere. Effortless Learning: Thanks to our innovative rotating screen, this Guitar Chord Practice Tool is a game-changer for beginners. The specially designed display makes chord practice smoother, easier to understand, and saves a lot of trial and error time. Adjustable Practice: Its adjustable tension allows users to cater to their unique playing habits and accuracy requirements for comfortable practice, reducing fatigue and enhancing performance. Improves Timing Accuracy: With built-in metronome function, allowing practice aligned with rhythmic better than to improve the unity of dynamics and speed, assuring you grasp the melody's nuances effortlessly. Wonderful Present: Surprise those who love the ukulele with our Guitar Chord Practice Tool, an great practice companion great for birthdays, holidays, and other gift-giving