vintage Working ROLA metal HORN SPEAKER 22" hi / 14"bell / 285 ohms | eBay
Fire Rated Speaker Mic for Ken-Wood/Moto-Rola R7 Heavy Duty Waterproof (IP67 Rated) 2-Way Radio Speaker Mic with Nexus Jack - China Remote Speaker Microphone and Speaker Microphone price | Made-in-China.com