This Autographed Microphone has been Personally Signed by Michael Buble. This item is 100% Authentic and comes with a PSA/DNA Certification numbered Hologram. Please note that PSA/DNA no longer provides serial-numbered COA cards, and the attached PSA/DNA sticker will serve as the complete authentication for this item.The authenticity can be verified on Professional Sports Authenticators website. This microphone is not function. It does not have any cords or wires and will not function without any repair.