9V DC AC Adapter For CTK 120 Keyboard Power Supply Charger 9V DC AC Adapter For Casio CTK 120 Keyboard Power Supply Charger Input Voltage : AC 100-240V Input Frequency : 50-60Hz 9V 850mA Compatible with: Casio CTK-120 Piano Keyboard, Great for Replacement,US Standard Plug. Industry Quality : Over Voltage Protection, Over Heat Protection MONEY BACK GUARANTEE -MONEY BACK GUARANTEE - We are Company that wants your Repeat Business so, if You Do Not Like our Product or Don't Want It For Any Reason, We Will Happily Accept The Return and Give Your Money Back. No Questions Asked. 30 Days Money Back Guarantee - 24 Months - Exchange.