This is a 9V fixed-voltage MyVolts-branded power supply adaptor designed to meet exactly the power specification of your Casio CTK-611\/CTK-671 Keyboard. Specifications: - Output voltage is 9V - Max. output amperage is correct for your device - Output tip is the right size and specification - we\"ve tested it thoroughly - 2-pin plug for use with the Type C (EU) wall sockets - Input voltage is AC100-240V, 50\/60Hz In addition, this myVolts-branded replacement power supply for Casio CTK-611\/CTK-671 Keyboard is: - Compliant with all safety standards, and features overvoltage, overcurrent and short-circuit protection to protect your device from damage - RoHS and CE-certified - Energy Star level 6 approved, guaranteeing more efficient delivery of power to your devices, at less cost to you - Covered by a 2 years\" warranty: if the power supply fails within 2 years from the date of purchase, we\"ll replace it, no worries. About Shipping: All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances.Any questions, please feel free to contact us During the shopping process, if you have any questions, please feel free to consult us, we will reply you within 24 hours, wish you a happy shopping Thanks for your cooperation and we'll make you feel satisfied.