Long range-1200 meters intercom Bluetooth interphone kits for helmet motorcycle Snowmobile ski ATV etc.</br>Can pair 4 interphones at a time and the host machine can be switched to intercom with other 3 device. (only 2 riders intercom at the same time)</br>Auto-receiving mobile call. Wireless hands free communication for motorcyclist. Safe driving while talking with friends.</br>Waterproof National 5 waterproof level. Plastic + Rubber button more stable structure better waterproof performance. This system is fully weather protected.</br>Can be used as a Bluetooth headset and a wireless music headset while you're not riding</br></br>Product Description</br></br><b>Features:</b><br> Full duplex real-time two people intercom at the same time up to 1200 meters call distance so riding communicate freely.<br> The host machine can be switched to intercom with other 3 device. (only 2 riders intercom at the same time)<br> VOX voice wake-up start no buttons easy to use safer ride.<br> Memory Matching easy to use.<br> with a stable CSR BC5 chip?? Bluetooth 3.0<br> High-power stereo HD quality headphones?? to experience the fun of music. Microphone split design?? optional wiring microphone?? and more user-friendly design.<br> The latest waterproof?? windproof design?? strengthen anti-noise?? can be used in high speed.<br> The latest Bluetooth technology?? low power?? up up about 12 hours talk time and about 300 hours standby.<br> Software can be upgraded.<br> Warranty time 1 year?<br> Certification CE??FCC??ROHS??BQB?<br> Audio navigation from GPS <br> Wind noise DSP cancellation <br> Full weather pr