The same feature set that made the 20S the world’s #1 Bluetooth communicator is still present in the 20S EVO. Use the updated intercom function to stay in touch with up to eight other riders up to 2 km (1.2 miles) away, through the Group Intercom™ feature. The 20S EVO still delivers HD-quality audio that’s clear, precise, and comfortable in every condition. Sena’s Advanced Noise Control™ ensures ambient noise doesn’t interfere with incoming and outgoing audio. Bluetooth 4.1 technology, high-quality stereo Bluetooth speakers, and dual-module architecture create a smooth, crisp, and responsive user experience that the 20S is known for. appreciate.