I purchased this guitar new and have been using it for home practice for a long time. This is my second silent guitar, so I knew how to use it. I've been using it without plugging it in since I bought it. I liked that I could use the black plastic part for golpe. Please search the internet for the specifications. There are no included accessories such as an adapter or headphones. I tried putting batteries in for the listing, but the power didn't turn on, so it needs to be repaired if you want to use it with headphones. The batteries are unused, but I bought them about 5 years ago, so I don't know if they still work. I have a bulk purchase of batteries, so I will include them. I will also include an old guitar stand. I was using it until yesterday. I am selling it to organize my home. I will not clean it, but I will replace the strings and put it in a soft case, then in a cardboard box wrapped in bubble wrap for shipping.