Compatible Devices: Casio CTK-571, Casio LK-300TV, Casio LK-220, Casio CTK-810, Casio CTK-451 Brand: Current Rating: 1 Amps Frequency Range: 60 hertz Input Voltage: 240 Volts Input: AC 100-240V, 50-60Hz Output: DC 9V 1A.Short circuit Protection.Light in weight and with heavy-duty cable-wire.Tip length: 10mm Build in Dynamic IC, Charger IC & Power fuse for rapid charging and over charge protection. Compatible with:Casio CTK-451 CTK-571 CTK-810 LK-300TV LK-220 Keyboard.