The Casio SA offers top-notch tones as well as accompaniment patterns The SA also features an LCD musical information system as well as the option of turning off the melodies of the built-in songs so that performers can play these themselves Casio includes a hands-free headset microphone so you can sing along with all of your favorite songs Casio SA Features Polyphony max -Note Auto Rhythms Rhythms Free Sessions Funny Tones PCM Keys Demo Songs Songs Headset Microphone Thanks to the microphone headset included in the package the player can sing along over the amplifier without having to take his hands from the keys Do you have questions about personal keyboards Click on the image for product comparisons and FAQs more info