... handset 1.Connect to the mobile phone (Also computer)to avoid radiation 2.Transmission: Wireless Technical ... :Bluetooth version: V1.2Transmit power: Class2Support Protocol: Bluetooth headset, hands-free,Transmission: WirelessTransmission range: 8-10 metersCenter frequency: 2441.00MHzFrequency range ... .2 * 4.5 JY phone, bluetooth retro phone handset,bluetooth mobile phone handset