Twiins HF Smart Duo Bluetooth Motorcycle Helmet Communication Headset Cut Out Tool Power Tools One part of the coupling

One part of the coupling system is placed into the port on the helmet and the other on the air hose

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Twiins HF Smart Duo Bluetooth Motorcycle Helmet Communication Headset Cut Out Tool Power Tools One part of the couplingFeatures: Easy set up. Plug and play, no tools needed. Instant installation with an easy and reliable Velcro system to fit any standard helmet. Voice Answering Function. Twiins allows you to answer by voice command. Its Voice Answering function allows you to answer a phone call without taking your hands off the handlebar or your eyes off the road. Universal For All Helmets. Fits inside any standard helmet preserving the helmet's original aesthetic,