- Multi-pin walkie-talkie remote speaker microphone designed for seamless compatibility with Retevis models RT29, RT48, RT87, RT47, RT47V, RB23, RB46, RT83, NR30, as well as Ailunce HD1. Also compatible with a range of Motorola models including EX500, GP328Plus, GP338Plus, 329Plus, 339Plus, PRO5150, EX600, EX560XLS, EX600XLS, GL2000, GP344, GP388, GP644, GP688, PRO5150Elite, PRO7150 Elite, PTX700Plus, and 760Plus. Serves as a replacement for Speaker Mic PMMN4022 series (PMMN4022a, PMMN4022b, PMMN4022c, PMMN4022d, PMMN4022e, PMMN4022f, PMMN4022ar). - Features a 3.5mm audio jack port, allowing for discreet communication with standard 3.5mm earpieces, perfect for confidential operations or situations requiring silent communication. - Equipped with a high-quality electret speaker, ensuring clear sound reproduction even in noisy environments. Experience audio clarity without muffling or crackling, enhancing communication effectiveness. - The omni-directional condenser microphone captures high-quality sound from all directions, making it ideal for use in loud settings such as construction sites, security operations, and outdoor events. - Compact and durable design, suitable for professionals who require reliable communication tools. Lightweight for easy portability without compromising performance. - This remote speaker microphone is perfect for security personnel, event coordinators, and outdoor enthusiasts who need to maintain clear communication in challenging conditions.