Windporting Remote Speaker Microphone, IP57

Remote Speaker Microphone Submersible (IP57) without Audio Jack. The RSM incorporates both wind porting technology and waterproof capability. The IP57 submersible RSM is tested at 1 meter for 30 minutes which is ideal for outdoor radio communication in wet conditions. In howling wind, driving rain and severe weather, Windporting helps you communicate effectively and hear clearly. Windporting technology eliminates the whining and howling sounds of wind blowing across your remote speaker microphone. It also prevents water from clogging the microphone, which results in clearer transmissions.