... microphone design 2.2.4GHz Wireless transmission frequency 3.Private mould 2.4G Wireless Bluetooth Headphone Features:1. in ... body (much smaller than the cell phone radiation) wireless transmitters will generate electromagnetic signals, such as the ... 10m,360° Working voltage:5.0VWorking Current:60mA Interface: USB System Requirements: WindowsXP,WindowsVista,Windows7 2.4G Wireless Bluetooth Headphone ...