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Unlike the 20S’s flip-up antenna the 20S EVO has been equipped with a rigid shark antenna so the slim antenna design improves Bluetooth intercom stability and range while allowing for more robust overall performance. Following the updated design Sena’s premium HD speakers are the upgrade for the 20S EVO. The HD speakers feature a significant increase in volume bass and sound quality and have a bevelled edge so they fit easily into the helmet’s speaker cutouts. The 20S EVO delivers HD quality audio and allows simultaneous use of music GPS or phone. Sena’s Advanced Noise Control technology prevents noise interference while you have a conversation with up to 7 other riders at a distance of up to 2 km via the innovative Bluetooth intercom for motorbikes. With Sena 20S EVO audio multitasking technology you can talk on the intercom and listen to music or hear the sat nav announcements at the same time. With the 20S EVO you no longer have to worry about audio interruptions. The different audio sources now overlap to create a pleasant listening experience. It’s never been easier to adjust settings and connect the 20S EVO. Motion sensor technology allows a simple shake of the unit to connect to other 20S EVO users and voice commands can be used to make adjustments while keeping your attention on the road. The optional remote controls also make the Sena easy to use. When you connect the 20S EVO to the Sena Headset App for iPhone and Android you can configure device settings and access our quick start guide with just one click. You can effortlessly connect the 20S EVO to the Sena RideConnected app to talk to an almost unlimited number of riders over an unlimited range as long as you are connected to a mobile network.