Portable Hand Roll Piano Beginner 49 Key Thickening Hand Roll Piano MIDI Soft Keyboard Folding Hand Rolling Piano

   product information The 49-key scrollable key is an international standard key. The keys can be rolled up, small in size and easy to carry. The keyboard surface has a function hotkey to adjust your favorite rhythm. 8 groups of drum rhythm, one button and one tone, recording and playback function, 16-level volume control, 32-level beat control, automatic sleep power saving function.  Built in 16 sounds.  Built in 10 rhythms.  Built in 6 demo songs for learning and enjoying classic songs.   The built-in speaker sound is round and crisp, and melodious.  Recording/playback function   External headphones, external DC power supply. Power: 3 AA batteries or DC 6V adapter (Note: delivery charging cable / without battery / without charging adapter) Keyboard size: Control box: 10 (length) × 22.2 (width) × 2.2 (height) cm; keyboard: 73 (length) × 17.1 (width) × 0.3 (height) cm Keyboard color: fantasy black, pearl white, autumn moon silver   Single package: neutral color paper box Chinese manual (please contact customer service for English version)