... V2.0 + EDR compliant, backward compatible with v1.2 and 1.1USB interface fits both Desktop PCs and ... for external power supplySpecificationStandard: Bluetooth V2.0Chipset: CSR BlueCoreFrequency: 2.4~2.48 GHzSymbol rate: 3MbpsAntenna: IntegratedReceiving / Sending rang: 0 ... /T, Western Union, Alipay (Escrow),Paypal,Credit Card...2.30% deposit and 70% balance before shipping.Warranty and ...