E Support&trade; Pocket Guitar Trainers Instrumentos Musicales Guitar Accessories Practice Portable Tool 4 Fret Strings Gadget for Beginner Made of high strength plastic shell, wood fingerboard,genuine guitar strings, durable in use. Improve skills on cars, airplanes, the office, school, dinner table, and virtually an other places it is extremely portable and makes it the ultimate go anywhere, play everywhere guitar practice tool Dimensions: Closed approx 19.5cm x 5cm; Open approx 33.5cm x 5cm No guitar-playing voice. Very small voice, not bother others.NOTE: THIS IS NOT REAL GUITAR. Just chord PRACTICE TOOL. SO IT CAN'T BE TUNED.