Features: Portable chord trainer for ukulele beginners, you can carry it around when you are traveling and practice fingering anytime anywhere. With LCD screen showing most commonly used ukulele chord charts, which can help ukulele beginners to practice and memorize chords. 360 rotatable design enables you to adjust the viewing angle, and the prompt sound of chord change make it easier to use. Supports metronome function, beginners can learn the chords with a customized tempo(30-260bpm). Please noted that the metronome only give the prompt tone of first beat. Equipped with 4pcs nylon ukulele strings, which makes your practice more close to playing real ukulele; High-quality ABS material, durable and lightweight. Specifications: Material: ABS Color: Black/ Pink/ Green/ Blue(optional) Power Supply: 1 * CR2032 battery(not included) Item size: 25 * 5 * 2.5cm/ 9.8 * 2 * 1in Item weight: 122g/ 4.3oz Package size: 26 * 5.5 * 3.5cm/ 10.2 * 2.2 * 1.4in Package weight: 145g/ 5.1oz Note: This chord trainer is mainly designed for chord and fingering practice. Its sound is not like real ukulele. Package List: 1 * Chord Trainer 1 * Instruction(English & Chinese)