Icom HM205RB Waterproof Speaker Microphone - Enhanced Control and Clear Audio The Icom HM205RB is a robust waterproof speaker microphone designed for use with Icom M506 (rear connector version) and M605 series marine radios. This speaker microphone features a high sound pressure Φ45mm speaker, ensuring exceptionally clear and loud audio, vital for communications in noisy marine environments. Equipped with essential controls including Channel Up/Down buttons, High/Low transmit power, 16/C (Channel 16 or Call Channel) access, and a responsive PTT (Push-to-Talk) key, it provides comprehensive command over your radio functions directly from the microphone. The Icom HM205RB boasts an IPX8 waterproof rating, making it highly durable and reliable for challenging marine conditions. Its 8-pin waterproof connector and coiled cable ensure a secure and tidy connection, providing consistent performance and convenience for boaters and marine professionals. Key Features High Sound Pressure Speaker: Features a Φ45mm speaker for loud and clear audio, ensuring messages are heard even in noisy conditions. Integrated Controls: Includes Channel Up/Down, High/Low power, 16/C (Channel 16/Call Channel) buttons, and PTT for complete radio control. IPX8 Waterproof Rating: Ensures the microphone can withstand submersion, providing reliable operation in harsh marine environments. 8-Pin Waterproof Connector: Guarantees a secure, robust, and water-resistant connection to compatible radios. Coiled Cable: Offers flexibility and neatness, extending to a practical length (430 mm / 16.9 in when curled) while preventing tangles. Compatibility M506 M605 M510 M510EVO Benefits Superior Audio Clarity: The high sound pressure speaker ensures critical communications are always clear and understandable, enhancing safety and efficiency. Convenient Radio Control: Direct access to essential radio functions from the microphone simplifies operation and improves response time. Reliable in Wet Conditions: IPX8 waterproofing ensures dependable performance even when exposed to heavy spray or submersion, crucial for marine use. Durable and Long-Lasting: Built to withstand the rigors of the marine environment, offering extended service life. Enhanced Communication Efficiency: All key controls at your fingertips allow for quick adjustments without needing to access the main radio unit. Warranty 1-year manufacturer's warranty