I am selling this item because I haven't had a chance to use it for a long time. I have confirmed that it works, and all the keys on the keyboard respond. The batteries are depleted, so I have removed them. Please purchase new batteries when you use it. The original batteries were Eneloop rechargeable batteries. Rechargeable batteries are recommended. The accessories are all included, such as the warranty, instruction manual, USB cable, and USB receiver. I have cleaned it simply with an air duster and alcohol.