This microphone appears to be from around 30 to 40 years ago. Power has been confirmed. It is usable. Perhaps a microphone from the bubble era. The gold color has a nice feel to it. I am not familiar with microphones, so I cannot explain the functions or specifications. I hope to sell it to someone who can judge from the images. This is a used microphone. I do not recommend it to those seeking new or even mint-condition used items. Please understand this before considering a purchase.