This is the Nobsound NS-01G pro. It is in working condition, but it takes some time to start up after the first time the power adapter is connected. I think it takes about 5 minutes. There is no problem if the adapter is left connected. Please refrain from purchasing if you are concerned. The unit works without any problems if the lamp on the bottom left of the main unit lights up (Image ②). Both Bluetooth connections work without any problems. The included accessories are the main unit and the AC adapter only. We are looking forward to your purchase if you understand that this is a used item. - Model Name: NS-01G - Brand: Nobsound - Connection Type: USB, AUX - Output Terminals: RCA terminals - Features: Bluetooth compatible - Country of Manufacture: China