WIRELESS HANDSFREE INTERCOM: Communicate inside the vehicle or between vehicles, with up to a 1-mile range with no physical restrictions of wired communication systems, and without touching a button. FREEDOM TO ROAM : Enjoy the ease and convenience of not being bound to your vehicle – the freedom to move without restrictions, like being a spotter for your group. Connectivity follows you, not the other way around. NO-CELLULAR COVERAGE NEEDED: Broad, seamless coverage and reception. You’re never out of range, wherever you are. SAND/MUD/WATERPROOF : All weather conditions and all-terrain are welcome with your waterproof, dustproof, and mudproof unit. SOUND BY JBL : Powerful 40mm high-definition speakers engineered to perfection by JBL experts, with an improved music processor and three redesigned audio profiles.