61 keys rollable piano keys are international standard keys, the keys can be rolled up, small size, easy to carry. Light and thin appearance design, simple and beautiful. With 5 full scales, bringing international standard sound. Built-in 128 kinds of tones. Built-in 100 kinds of rhythms. Built-in 40 demonstration songs for learning and enjoying classic masterpieces. Built-in speaker tone is round and crisp, melodious and pleasant to the ear. External headphones / audio and MIDI interface. Power supply: 4 AA batteries or DC 6V adapter Dimensions: Control box: 9.6 (L) x 22.8 (W) x 3.3 (D) cm; Keyboard: 88 (L) x 17.4 (W) x 0.5 (D) cm Electronic piano weight: 830 grams Operating instructions. Play (tone) mode. 1. When you turn on the instrument, it will automatically enter playing (tone) mode, and the digital tube will display "000". 2. Press [TONE+], [TONE-] to select the playing tone, all the tone selection data will be displayed on the digital tube simultaneously.Rhythm mode. 1. Press [RHY+], [RHY-] to enter the rhythm mode. At this time, you can select the rhythm by this key. 2. The demonstration song is played at the same time, the flashing lights, digital tube decimal point will flash with the rhythm.3. Press [TONE+] and [TONE-], you can choose to play the tone Demonstration mode. 1. Press [DEMO] key to realize the continuous singing function. 2. Press [DEMO] key to select the next demonstration song to achieve the jukebox function. 3. The piano key function is shielded during the demonstration song playback. 4. While the demonstration song is playing, the flashing light and the decimal point of the digital tube will flash with the rhythm. 5. Press [TONE+] and [TONE-] to switch the tone of the main melody.Recording-related functions.Recording. press [REC] key, you can enter the recording mode, the digital tube display "REC"The recording function is a multi-channel real-time recording method to record notes. After entering the recording mode, the user can play the keys at will.The system will automatically record the keys played by the user faithfully. When the recordings planned by the system