(SPENCOMM) division to begin working on a reliable solution. SPENCOMM personnel traveled to NASA's Manned Spacecraft Center (now Johnson Space Center) and Kennedy Space Center to meet with and get design feedback from Schirra and several other astronauts, including Gordon Cooper. Together, SPENCOMM and NASA spent only 11 days to create a working microphone design for space communications and Schirra was the first to use the new communication technology during the Mercury-Atlas 8 mission. Significant redundancy was built into these headsets, as each microphone circuit had two transducers and each receiver had five transducers—in addition, the headsets were used in pairs. The use of these SPENCOMM-NASA headsets in astronaut space suits continued through the remainder of the Mercury program, the Apollo program and on to this day. The words spoken by U.S. astronaut Neil Armstrong as he stepped on the moon were transmitted through a Plantronics headset. MS-50 Following the Pacific Plantronics partnership with NASA in the Space Program, the MS-50 headset gained recognition in the communication marketplace. The FAA, Western Electric, and companies with telephone call centers adapted the MS-50 as a replacement for existing headsets. On May 18, 1965, U.S. Pat. No. 3,184,556 was issued to W. K. Larkin for a StarSet In 1970, Ken Hutchings, an engineer who had joined Pacific Plantronics, patented a device which was marketed as the "StarSet". United States Patent 3548118 describes Wireless products In the 1980s, Plantronics created a line of cordless products using infrared technology. Though the technology utilized was the same one being used by television remote controls, the link did not require a Federal Communications Commission (FCC) telecommunications approval. One of the first products used the infrared beam to create a communications link between a small transmitter and a base unit which was connected to the telephone network. This product was the first "echo-free" speakerphone for use in conference rooms. The small transmitter could be handheld or clipped to clothing to ensure a good pickup of the speaker's voice. Wireless office headsets In 2003, Plantronics introduced the CS50 wireless headset for use on office phones. Since that time, Plantronics has manufactured other wireless headsets, including the "CS70N", CS500 Series, and Savi 700 Series. In recent years there has also been strong focus on Unified Communications headsets and speakers. Mobile and Bluetooth mobile headsets Plantronics manufactures mobile headsets, including a line of Bluetooth headsets for mobile phones. The Pulsar 590,