Cardo units are the thinnest motorcycle communication systems out there. They are designed with aerodynamics in mind, slimed down to help reduce drag. Cardo-JBL partnership delivers an extraordinary listening experience whether you are going slow and steady on a mountain pass or just flying down the freeway. Enjoy the most robust multi-party intercom, top quality design and remarkable long distance reception available in today's market.; Connects up to 15 riders Natural Voice Operation Overall Range of 3.4 Miles Powered by 40mm JBL Audio speakers Automatic volume control Smart intercom/music mixing Rider-to-passenger audio sharing Built-in FM radio with RDS and radio sharing 6 built-in FM radio presets, auto scan, and seek Up to 13 hours of talk time IP67 waterproof and dustproof Duo Pack