Size:Single Pack The Sena 5S is the next-generation of feature-rich and value- packed intercoms from Sena. This easy to use and accessible unit features High Definition in-helmet speakers, High Definition two-way intercom, and an integrated LCD screen. Connect to your riding companion or passenger with HD Sound quality and music sharing. You can also pair the device to your smartphone to listen to your music, hear GPS prompts, and answer phone calls hands-free. The Jog Dial makes for an intuitive user interface that is much easier to control while riding, which means you'll ride safer. With access to a smartphone app, you can also adjust the 5S' settings and access audio equalizer profiles for music playback. The 5S has all the features you need at a fantastic value.