Medeli M331Millenium Series,keyboard, 61 touch sensitive keys, 2 x 3 W,M331 is a powerful portable keyboard for beginners and music enthusiasts. In order to provide the best experience for beginners to explore their endless imagination, Medeli has provided 633 voices and 220 styles for beginners to experiment with. The 240 styles are also supported by 128 polyphony technology to ensure a full band backing effect without a dropping note. 160 classic songs are on