HQRP AC Adapter/Power Supply for Casio CTK-671 / CTK671 / CTK-691 / CTK691 Keyboards Replacement [UL Listed] plus HQRP Euro Plug Adapter HQRP&reg; Replacement AC Adapter plus HQRP&reg; Euro Plug Adapter; Input: AC 100V - 240V; Output: 9V; 800mA; UL Listed; Safety Features: High Efficiency and Reliability; Automatic Overload cut-off; Automatic Thermal cut-off; Short circuit and Over Voltage protection; Low Interference & Noise; 1 Year warranty!