National Echo Microphone Can be used with both wired and wireless specifications. Wireless reception is possible with FM radio. The echo is likely spring-based. The original box is not included, but the description on the back of the original box remains and is attached. When shipping, it will be packed in a generic box with air cap cushioning material. This item was purchased new in the Showa era and has been stored at home. It is quite old, but it is considered a valuable item. We are waiting for those who need it to purchase it.