Base on the second helmet for Sena 50C the Universal set 50C with a premium sound is equipped with the upgraded loudspeakers and the microphone which were developed together with experts in the field of a sound of Harman Kardon. The upgraded microphone and professionally developed loudspeakers allow 50C to guarantee the entering and outgoing sound of unsurpassed quality. Loudspeakers transmit a crystal-clear sound in the driver's ears, and the microphone with the new sensor provides reliable voice transfer during driving. The users of original model 50C updating the set of clips will need to update an insertion of the device and to turn on SOUND BY Harman Kardon loudspeakers in the Sena Motorcycles application. Technological features: The sound of loudspeakers of Harman Kardon for Sena 50C is improved. Hay the most advanced speakers at the moment the Loudspeakers updated experts in the field of a sound of Harman Kardon It is compatible to all communication devices for the Sena 50C motorcycles. Access to 5 adjusted audioequalizers in the Sena Motorcycles application. Complete set: A universal clip for a helmet. The wire microphone from Harman Kardon. The microphone on a flexible bar from Harman Kardon. Loudspeakers from Harman Kardon. The glued adapter for superficial installation. Sponges for the microphone. Rubber slips. A fastener velcro for the holder of the microphone. Fasteners velcros for the microphone on a bar. Fasteners velcros for loudspeakers. Glued assembly plate. Overlays for loudspeakers (thick). The holder of the microphone on a bar. Six-sided key. Production of the USA