61 key roll piano with horn adult children silicone electronic keyboard piano enlightenment 1.61 keys (C2~C7) standard tone 5 tone group + 1 key.2.128 tones, 100 beats, 40 selective keys.3.LCD monitor.4 master volume control keys, beats, control keys.5 mode selection keys (tone, beat)6.recording, programming, playback functions.7 single finger and multi-finger shad benign.8 presentation jukebox.9 pair keyboard functions.10 start/stop, sync, insert function keys. Output 11. MIDI features. Can be directly connected to a computer and play using MIDI software. saMIDI output cable is required to edit music 12.2 step teach-in function.13. Internal speaker: external audio/headphones can be connected 14 size: 61 keys: Control box (body): 230 (width) x95 (height) x31 (depth) mm keys: 880 (width) x168 (height) x6 (depth) mm16. Power supply: 4A battery (can play for 15 hours), external power supply. Power supply: DC6V (AA1.5VX4 battery) Output power: 500MW instrument can use 5 or 4 batteries or 6VDC power supply (Note: Do not use at the same time)