Specifications: - Keyboard: 49 Standard Keys - Tone: 8 Tones - Demo Songs: 6 Demo Songs - Volume: Knob Volume Control in Clockwise/Counterclockwise - Record and Play Function - Demo Play - Stop Function - Echo Sustain Function - Power-Saving Mode: Smart Sleep After 3 Minutes with No Action - Built-in Speaker: Support External Speaker and Earphone - Internal Power: 4 AAA Battery (Not Included) - External Power: USB Power Adapter and USB Power Cable - Size: Control Box- L15 x W18 x H2.2cm - Keyboard- L72 x W12.5 x H0.9cm