Feature: 1. Two Types of Power Supply: Directly powered by battery for convenience; Or use USB cable, plug one end into the direct current port on the back of the keyboard, and connect the other end to a USB adapter that supports 5V‑1A power output to power on the keyboard. 2. Material: Made of ABS material with fine workmanship and smoothly edge design to ensure safety. The piano keys are specially designed for small fingers, allowing children to better practice playing the piano, effectively promoting their finger dexterity and coordination. 3. Portable: The overall structure is compact, lightweight, very easy to carry. Whether children are at home or out playing, they can easily take it with them and enjoy the fun of playing at any time. 4. Single Speaker: Not only is the sound texture clear and pleasing to the ear, but also the volume is moderate, which can perfectly present the rhythm and tempo of the music, cultivate and inspire the child musical talent, protect the child hearing, and enjoy the music to the fullest. 5. Multifunctional: Built in a variety of demonstration songs, can be appropriate rhythm to play, according to individual preferences, switching between different tones and sound effects, but also equipped with volume and speed adjustment and microphone function, the 37 key piano set a number of practical functions in one. Specification: Item Type: 37 Keys Kids Piano Keyboard Material: ABS Size: Approx. 39.5 x 12.8 x 3.5cm / 15.55 x 5.04 x 1.38in Battery: 3x AA batteries (not included). Package List: 1 x Electronic Keyboard 1 x Microphone 1 x USB Cable