①. It is specifically designed for beginners in guitar, with simple operation and easy pressing. It can be used with a tuning clip to make learning how to play guitar easier. ②. Fixed key blocks can help you accurately find the correct chord. The side of the button is printed with chord letters, making it more intuitive and easier to remember during performance. ③. Using polymer soft materials to protect the strings, with precise design and precise pressing, bidding farewell to noise. ④. Suitable for guitars ranging from 47 to 53.8 inches. The distance between his chords can achieve a perfect effect within 4.5 millimeters. Especially suitable for wooden and electric guitars. This product is particularly suitable for girls. You can play F and G chords with one finger. ⑤. This product is an upgraded version that can meet 90% of song performances. With it, you can quickly stand in the center of the stage, making it a for music enthusiasts. ⑥. Colour: Black ⑦. Material: plastic ⑧. Package Contents: 1 * Guitar Learning Aid Tool ⑨. Only the above package content, other products are not included. ⑩. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.