Feature: 1. With A Microphone: You can sing while playing the piano, and it also has a recording function, which is convenient for recording your own voice at any time. 2. Multiple Function: 4 tone, 4 rhythm and 10 demos, 5 instrument sound effect, meet your different needs, adjustable volume, clear button, simple operation, bring you convenience. 3. Ability Training: A wonderful musical educational toy to help develop children hand eye coordination, musical talent and fine motor skills, etc. 4. Dual Power Supply System: USB charging or 3 x 1.5V AA batteries (not included). Lightweight and in small size, makes it very convenient for both outdoor and indoor use. 5. Plastic Material: Bright color, beautiful and practical. Electronic keyboard adopts excellent plastic material, safe and eco friendly, firm and sturdy, durable for use. Specification: Item Type: Electronic Keyboard Material: Plastic Product Size: Approx. 41 x 15cm / 16.1 x 5.9in Power Supply: 3 x AA batteries (not included) or USB cable Can share mobile phone power adapter.. Package List: 1 x Electronic Keyboard1 x Microphone1 x USB Power Cord Note: Please allow slight error due to manual measurement. Thanks for your understanding.