The Cardo Freecom 4+ now has natural voice operation, you will never have to press a button, turn a wheel or move a slider again. Whether you ride with a buddy or in a group of up to 4, just say "hey Cardo", and your Freecom 4+ will do the rest. Bringing the ultimate sound experience to riders around the world, the JBL-Cardo partnership combines Cardo's passion for the ride with JBL's passion for sound. Tying the ergonomic with the aerodynamic, Freecom 4+ innovative, razor-thin wheel is a true breakthrough in both form and function. No other Bluetooth communication system packs so much punch and creativity in a 20mm thin package.; Pair 1-4 riders Customizable Voice-Control (VOX) for receiving / rejecting incoming intercom and mobile calls Superb high-definition audio quality by JBL ultra-thin 40mm speakers and 3.5mm jack Up to 13 hours talk time/1-week standby Waterproof and dustproof - IP67 certified Receive in-helmet navigation instructions from compatible GPS devices Bluetooth 4.1 Single Device