Bundle orig set up for Motorola MT1000 and includes interface box and connector for that, but looks to be standard headset you could modify for racing, scanners, or other radios. Has big red PTT button and vol control on it. We tested it with a Motorola MT1000, seemed to work fine other than radio played only in one ear, not sure if that is normal? Cable issue? or needs repair? selling as is Rubber trim covers on sides disintegrated and fell off, but look to be mostly cosmetic Selling as you see it all or make offers on individual items if you wish.