This Bluetooth ES-388 Class 1 USB 2.0 Adapter operates at 2.4 GHz frequency and is Bluetooth Ver. 1.1, 1.2, 2.0 compliant! The ES-388 features a transparent blue design with USB 2.0 interface, operates at 2.4 GHz frequency, has a range of 328 feet (100 meters) and built-In security functions!
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