SENA SMH10-11 communication system comes with a longer length microphone to better accommodate installation into arborist helmets. An extra mic is included so when it needs to be replaced, it is already available to install. Improve safety and efficiency through the SENA WORK4 communications device, a Bluetooth 3.0 stereo headset with long-range Bluetooth intercom communications. This device has changed the way the industry communicates. NOTE: This listing is for the DIY Bluetooth communication system only, and does not include hearing protection or installation.
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