The Vintage Kool Shades Wireless FM Microphone is a rare retro toy that is sealed and in new old stock (NOS) condition. This unique piece of memorabilia features a wireless FM microphone with a stylish design. Brand new, still sealed in original packaging. Obviously since it’s sealed, I can’t test it, but I am assuming since it is brand new, it works fine. If you open it and have any issues, just let me know. Happy to combine shipping.