... ME/2000/XP/2003/VISTA operating system,Windows Mobile6.0 or Symbian S60 smartphone operating system compatible. Receiver sensitivity:-75bm (standard) ... , bluetooth speaker, bluetooth mouse, Bluetooth dongles,Pager, pager system, 3G wireless modemcell phones, Bluetooth keyboard for ipad and iphone 4, etc ... Village,Shiyan Street,Bao'an District,Shenzhen,China518108 wireless bluetooth numeric keypad