Ketron Klavi Pro Piano-Expander, 12 Piano-sounds Grand Piano 1/Grand Piano 2/Rock Piano/Upright/Electric/House/E-Piano 1-2-3,FM Piano 1-2/Pianomix, 64 polyphone, reverb, chorus, Midi In/Out jacks, Line out L/R jacks, headphone jack, Slider volume control, dimensions L x B x H in mm: 120 x 130 x 40, weight 0,6 kg, incl. power supply