No more fear of disturbance! Plug in the headphones can enter the silent mode, alone to enjoy their own musicspace: take off the headphones can enter the playback mode, play you sing, we gethigh! More with a dial-type independent volume knob can adjust the volume at will. Intelligent self-learning system: It has a variety of ways to practice grid climbing, five types of fingered scales,eleven types of chord practice, pre-prompts the playing grade by liquid crystaland metronome, intelligent real-time determination of playing right and wrong.real-time display of scale grade chart and playing right and wrong. High fidelity CD sound quality: 44.1KHZ high sampling frequency and 32-bit sampling accuracy,acoustic guitar and electric guitar tone switch at will, while havingtwo kinds of guitar two kinds of guitars, so you can easily performfolk and rock Rolling two classics. No tuning, no hand injury: The end of the guitar strings with custom spring tension stud adjustable patentedtechnology, the user can adjust the guitar strings according to their own feelarbitrary tightness, And this intelligent guitar's tuning-free function, to achievethe guitar string tension adjustment does not affect the intonation, no need tobuy a separate tuner, it is a real gentle guitar does not hurt the fingers! Features: 7 fret mini size smart guitar Simulate real guitar, real guitar voice and feel of playing Mini size, easy to carry and store Built-in 2000mAh rechargeable battery (USB charging) Built-in speaker, headphone/speaker jack out Bluetooth connection with apps Timbre: Acoustic Guitar and Electric Guitar Digital capo:-2 capo - 20 capo Instructions for use: 1. Please check whether the product is in good condition before use. 2. Please wash and keep it properly after use. 3. Due to different production bat