- Material: silicone+ABS - Size: 83cm in length, 22.4cm in width, buyer comes with 3 No. 5 batteries - Function: 16 timbres/10 rhythms/3 sound effects/6 demonstration songs/8 drum beats/16 level volume adjustment/32 level rhythm speed adjustment/recording playback function/learning mode/built-in speaker/external headphones - Generous Quantity: with 1 foldable pianos (individual package), 1 charging cables and 1 instruction manuals included in the package, each piano designed with 49 keys, you will have ample choices to meet your musical requirements, whether you are learning a funny song or simply enjoying playing familiar tunes, having a backup on hand is always a good idea - Simple to Operate: designed with rechargeable and batteries function, these foldable piano keyboards are easy to handle, you can use batteries directly (not including batteries), or use the charging cable to charge it after installing the battery, the smooth operation makes the creative process even more enjoyable, allowing you to focus solely on your music -Versatile Functions: these portable piano keyboards for adults offer more than just simple playability, with recording, playing, timbre, volume control and so on design, they cater to varied musical needs, allow you to discover an array of sounds and experiences - Built in with 16 tones, 10 rhythms, and 6 demonstration songs, you can learn and appreciate famous songs. Suitable for musicians to play during travel, without the need to carry bulky instruments. - Equipped with great speakers and headphone connectors, it provides a clear and realistic audios experience. The keyboard adopts sensitive touch technology, which can easily control the volume and length of notes, simulating the playing experience of a real piano. - Quality Material: these portable piano keyboards are crafted from reliable silicone and ABS plastic, soft and smooth, hard to wear or fade, these pianos promise a nice and ideal performance for a long time - Ideal Size: measuring approximately 28.00*19.00*7.00 cm in packaging size, these hand roll portable pianos are portable and lightweight, the compact size ensures that you can enjoy your music at diverse venues