Donner DEP-10 Digital Piano 88 Key Semi-Weighted, Full-Size Electric Piano Portable Keyboard for Beginners, with Furniture Stand, Triple Pedals, Power Supply

128 polyphonic number, equipped with two 25W speakers, 4 "(6.35mm) headphone output (excluding headphone). This product can be supplied by a standard indoor wall socket. Please use only the power cord specified by this product. When you do not use it, Please be sure to turn off the power supply. If you do not use it for a long time, please pull out the power cord and keep it properly. When playing rhythms, press the “effect” button and meanwhile press “white C4”, play rhythms and chords with one finger in the left chord keys zone (1-34 keys from left). Press the “Effect” button and meanwhile press “white C4” to stop playing the rhythms or chords. 2. When playing rhythms, press the “effect” button and meanwhile press “white D4”, play rhythms with multi-fingers in the left chord keys zone (1-3 keys from left).