Vertex MH-90A4B Compact Speaker Microphone Model Number: MH-90A4B MH-90A4B Compact Speaker Microphone Compact Speaker Microphone easily fits on a jacket label, placing audio next to the users ear. The PPT is conveniently located so the user can operate without needing to look at the radio. Features Specifications Documents Related Products No additional features are available for this product No additional specifications are available for this product No downloads are available for this product Motorola EVX-S24 Digital Portable Radio Ready to talk to one of our experts? Call today! 1-800-452-4464