Sena 50S Universal Clamp Kit With Sound BY Harman Kardon Introducing the Sound BY Harman Kardon Clamp Kit, a replacement helmet clamp kit specially designed for the Sena 50S Bluetooth Headset. This kit allows you to easily set up a second helmet or upgrade a standard 50S headset to enjoy the exceptional audio capabilities of Harmon Kardon's premium speakers. By upgrading to the Sound BY Harman Kardon clamp kit, you gain access to enhanced speakers and microphones developed in collaboration with Harman Kardon. Additionally, both wired and boom microphones - meticulously designed by Harman Kardon - ensures that riders can transmit outgoing audio with unparalleled clarity and tone, as well. To further enhance voice communication while riding, microphone inputs now pass through a revised HK mic sensor. With Sound BY Harmon Kardon advancements, riders can upgrade their entire two-wheeled experienced. Includes: Includes premium Sound BY Harmon Kardon speakers Includes premium Sound BY Harmon Kardon mic (boom and wired) Universal helmet clamp Glued surface mounting adapter Velcro brand fastener pads for speakers Velcro brand fastener pad for boom microphone Velcro brand fastener pad for wired microphone Note : Original 50S users who upgrade to this premium clamp kit will need to update their devices firmware and enable the Sound BY Harman Kardon speakers in the Sena Motorcycles App. 50S-A0202