ABOUT USWirelesssir Electronics Technology Co., ltd. was founded in 2004, with its major business lied in IR&RF wireless audio transmission chips and relating accessory products, as well as offering package-service and tech support.In 2007, the re-organized company, Wirelesssir electronics Technology Co., ltd. got its trademark registered aimed to form his own brands that helps to future development. It combines R&D, sales&marketing, with over 3000 square meters of manufacturing base, and broad auxiliary sources, the products range expanded to the fields of IR & RF products including waterproof wireless speaker, tv listening devices, assistive listening devices, Noise Concealling Headphones, digital car cassette, etc.