1、Built In Speaker: Hand rolled piano with built in speaker, clear sound quality, support headphone interface, you can practice anytime and anywhere. Built in speaker can be connected to external headphones / external sound With LCD display. 2、61 Keys: Silicone electronic piano with 61 keys design, covering a wide range of sounds, suitable for practicing and playing a variety of repertoire.128 tones, 100 beats, 40 demonstration songs. 3、MIDI Out Function: Silicone electronic piano with MIDI Out connection function, can be directly connected to the computer, using MIDI software for playing, music editing and production. MIDI Out connection cable needs to be purchased separately. 4、Portable Design: Hand rolled piano with portable design, can be rolled up for storage, easy to carry and store, ideal for travelling or outdoor performance. Premium silicone keyboard with slick feel, suitable for both children and adults. 5、Battery Powered: The portable roll piano is battery powered and can be recharged via USB, no need to replace batteries frequently, more practical and economical, can be powered by 4pcs AA batteries or DC 6V power supply. 6、Multiple Modes to Choose From: The black and white hand rolled piano has a variety of tone and rhythm modes to choose from, providing more innovative and performance possibilities for music lovers. Item Type: Portable Roll Up Piano Keyboard Material: ABS, Silicone Size: Approx. 101x23cm / 39.76x9.06in Battery: 4 x 1.5 V AA Battery (batteries not included) 1 x Hand Roll Piano 1 x User Manual 1 x USB Cable