I believe I purchased this about 3-4 years ago. I used it for about six months. The battery is fine. All the lights work. There are no issues with the key switches. Bluetooth works fine. Includes the instruction manual and box, but no cable. It has blue switches! 61 keys US layout USB-C charging & communication I have cleaned it, but please understand that this is a used item before considering a purchase. Thank you for looking.