Features 1、There are function hot keys on the keyboard surface, which is convenient to adjust your favorite rhythm. 2、With 16 built-in tones, 10 rhythms, 16-level volume control, 32-level beat control, and 6 demo songs at the same time. 3、With automatic sleep and power saving function, earphones can be connected, so that you can practice without disturbing others. 4、With USB connection, can be connected with DC power supply to realize charging function. 5、The 49-key foldable electronic keyboard is small and easy to carry after folding. 6、Designed for children and beginners, the sound is very clear and full of energy, just like a real piano. Specification Item Type: Electric Piano Keyboard Material: Environmentally friendly silicone + electronic components + ABS Electric Keyboard Unfolded Size: Approx. 83 x 22.5 x 3cm / 32.7 x 8.9 x 1.2in Use Batteries: 3 x AA batteries (delivered without batteries) Power Supply Mode: USB interface charging Package List 1 x Electronic Piano Keyboard 1 x Connection Line 1 x Chinese and English User Manual