... PhonesProtocol Bluetooth host controller, L2CAP, SDP, RFCOMMLogicfor forward error correction, header error control, access codecorrelation, CRC, demodulation, encryption bit stream generation ... supplySpecificationStandard: Bluetooth V2.0Chipset: CSR BlueCoreFrequency: 2.4~2.48 GHzSymbol rate: 3MbpsAntenna: IntegratedReceiving / Sending rang: 0 ~ 100 mDimensions: 22mm x 18mm x ...