The Yamaha PS-200 PortaSound Digital Synthesizer Keyboard is a 49-key electronic keyboard manufactured by Yamaha in Japan. This keyboard offers a variety of sounds and functions, making it ideal for musicians and music enthusiasts. With its portable and battery-powered design, the Yamaha PS-200 is a versatile instrument that can be used for practice, performances, or recording music. Whether you're a beginner or a professional musician, this keyboard provides a wide range of creative possibilities for expressing your musical talent. Tested and works great with batteries. Can also use AC adapter, not included.