Designed for seamless communication in rugged conditions, the Motorola RM110 Remote Speaker Microphone (PMMN4148) features a 3.5mm audio jack for flexible accessory compatibility and an IP55 rating for protection against dust and water. Engineered for durability and adaptability, this RSM is ideal for outdoor and industrial environments, ensuring clear, reliable communication when it matters most. Its ergonomic design and versatile features make it a trusted companion for professionals in demanding settings.