OEM Casio AD-K64 AC Adaptor 
Power Supply / Battery Charger

Input:  AC 120V 60hz
Output:  DC 6V 800ma
3.8 mm Barrel connector, center negative.

Pre-owned.  Great condition.  Tested/Working.

Shipping via USPS Ground Advantage.  
International via eBay services at additional cost (but note US 120V plug).
Sorry, no returns unless damaged or significantly not as described.

Thanks.