The 50S offers an all-new experience of Riding Connected, now with SOUND BY Harman Kardon. The 50S features Senas Mesh Intercom which brings... Premium speaker and microphone with SOUND BY Harman Kardon. One-Click-to-Connect Mesh Intercomâ„¢. Stable and reliable connection | Article: Sena 50S Sound by Harman Kardon Bluetooth Communication System Single Pack, black for Men