OC-Headset-T88 Throat Microphone Ocean one Walkie Talkie Marine Walkie Talkie Marine Throat Microphone Suitable for Entel, Motorola, Marantz, ICOM, Ocean one brands such as radio II 2G Ex ia IIC T3 Ga Explosion Proof EU ATEX intrinsically safe certification Passed CE, FCC, RoHS certification IP67-rated waterproof and dustproof The throat conduction headset is a Compact and lightweight communication unit designed for extremely dangerous environments . It can be used easily and help you free your hands completely , and will help to enhance personal safety and improve work efficiency . The speaker and the microphone are integrated in a small area .The receiving voice is delivered to the inner ear through the transparent tube . So the communication content is safe and confidential and will not leak .   Digital Remote Speaker Microphone use the latest digital signal processing (DSP) technology , which can filter out the impact sound and other environment noise . The noise is checked and digital processed before transferring . User can talk freely in up to 120dB noisy environment . The RSM can be used with a communication headset or be used alone , and the voice is clear . It is suitable for a variety of applications , including the flammable or explosive environment . The RSM has patented design of a large PTT button with speaker function . That makes it easy to press the PTT button . You can switch freely between manual mode and voice control mode , which can makes the communication more convenient .