Features it is a 61-key c2c7 electronic keyboard with lcd display, easy to play, perfect for children or adult beginners. thickened skin-friendly silicone keys, wear-resistant, soft and durable, brings comfortable real-piano tactility and crisp sound quality. feature 128 kinds of tone, 40 demo songs for optional, meeting various playing needs. support recordingprogrammingplayback function, single- and multi-finger chord, demonstration jukebox, 2-step teaching and dual-keyboard function. support midi out function to connect with computer for music editing and performance. built-in loud speaker with volume control and headphone jack, can be connected to external audio or headset. two power supply ways, include 4aa 1.5v batteries and external dc 6v power supply these two ways cannot be used simultaneously rollable design, lightweight and portable, convenient to carry and store. Play music anytime and anywhere. Specifications material siliconeabs colour black white output power 500mw battery 4aa 1.5v batteries not included power supply dc 6v key 61 keys c2c7 tone 128 kinds of tone beat 100 demo 40 songs item size 98 x 23 x 6cm 38.58 x 9.06 x 2.36in item weight 1000g 35.27oz package size 28.5 x 20 x 9.5cm 11.22 x 7.87 x 3.74in package weight 1280g 45.15oz note x please read the user manual carefully before using this product. there may be slight errors due to manual measurement. Package includes 1 x hand roll piano 1 x usb cable 1 x user manual