The Cardo Sho-1 Duo set communications system for motorcycle riders is tested and approved for use with the Shoei Qwest, XR1100, Multitecs, Neotecs, J-Cruise, Hornet-DS and RJ Platinum. The Sho-1 is custom designed for Shoei helmets and the Cardo SHO-1 Duo set gives you 2 pre-paired advanced motorcycle communication systems for easy installation. The SHO-1 integrates seamlessly with the Shoei helmet design. On the inside, the SHO-1 houses the most advanced communication technology, including an unmatched plethora of features and functions. On the outside, it offers a streamlined and discreet appearance, including a replaceable battery for those extra-long-riding tours. This can be voice-controlled keeping your hands free for the bike and this has an intercom call function for calls with up to 8 additional riders or 4-Way intercom conferencing within a 1.6 km range. Riders can also connect two mobile phones simultaneously and talk hands-free as well as stream stereo music from any Bluetooth enabled smartphone or MP3 player and you can receive in-the-ear navigation instructions from your GPS. This also has an in-built FM radio, multilingual status announcements, self-adjusting speaker volume according to speed and ambient noise (clever!) hybrid and corded microphones included, removable battery with up to 13 hours talk time/1 week stand by, dual HD stereo speakers for superior sound quality and this is not only waterproof but dust proof! But there is more! The unique Cardo Community web platform allows riders to invite fellow bikers for a ride, plan and join tours, and you can personalise the device settings to get the most out of your riding experience. When on the road, you can use Cardo's exclusive SmartSet Android app (available free via Google Play to easily modify your SHO-1 settings from any Bluetooth enabled Android device. This has everything you need and more and this fits so seamlessly and comfortably in your Shoei helmet you won't even know its there (aside from all the amazing features it gives you) This is indispensable.