Motorcycle helmet Bluetooth intercom, Bluetooth 5.1 motorcycle earphone, with CVC noise reduction and FM radio function, capable of 4 riders talking simultaneously within the 1500M range (1 set)

SKU: GW53.0081

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No cell or other service or device needed. 
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A charging cable is included. If you need an extra one, this cable is proprietary but a 3.5 mm usb charging cable can be purchased and with basic soldering switch the wires to correct polarity. 
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This can reach 1500m in two-way communication. 
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3.5mm charging interface 
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Yes, both intercom and FM, as well as intercom and music can be used simultaneously. 
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Can support 4 people to talk back at the same time. 
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Intercom distance can reach 1500 meters 
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Yes, built-in FM radio.