◎ This is an add-on song chip compatible with early karaoke on stage microphones such as "SLE-PK500", "SLE-PK 1", "Z-PK 2", "Z-PK3", "Z-PK700", "Z-PK30", and "Z-PK7000", featuring 30 nostalgic "enka and kayokyoku" songs. ◎ It can also be used with other On Stage karaoke microphones with numbers from "Z-PK10GT" onwards, and should also work with "PK- (number)" models, "PK-X", and "PK-F" models. (This has not been fully confirmed.) ◎ This is a "Famous Songs of the Showa Era" collection, and due to copyright restrictions, it is sold as a "separate song" series in "30-song units". (These songs cannot be sold as "built-in songs" in the microphone itself, with the exception of some songs.) ◎ It is not compatible with other types of karaoke microphones ("PK-N..." or "PK-W..."), so please check your model before purchasing. ◎ Operation has been confirmed, but it is being sold as a "bargain item" because it is "without packaging", "without cover", and "without song list card". ◎ Two copies of the "A4 size song list" in the photo will be attached, so please use them instead of the "song list card". ※ Note: Sometimes, the "add-on song chip" may not be recognized when inserted into the "Karaoke On Stage" series microphone. ◎ In that case, it is likely that the "chip insertion connector" on the microphone side or the "connection terminals" on the chip side have "oxidized" due to aging, causing "poor conductivity". ◎ Be sure to "turn off the power" and insert and remove the chip 2-3 times. (Of course, please check the ⇧ direction.) ※ Shipping is planned to be "Nekopos".