The Casio WK-6600 Portable Keyboard Black is ideal for student musicians looking for a user-friendly portable instrument. The WK-6600 features 76 standard size keys which is ideal for students who dont require a full board. A great additional feature is the built-in mixer console for mixing the volume pan effects and other parameters. This is perfect for the versatile musician looking for a range of effects. The keyboard also features 100 DSP effects – users can store up to 100 customized DSP variations and activate 150 different types of arpeggiator at the touch of a button.