Chipset: CSR Bluetooth Version: V2.0 Working distance: 100 meters. Frequency Range: 2.402hz-2.480GHz. Receive Sensitivity: -80dBm. TX Power: 0dBm. Input power 5V from USB port. Operating channels: 79 channels of 1MHz BW. Host interface (USB): USB spec 2.0 complient. Operating humidity: 10%-90%. Works with bluetooth enabled device. The GoerTek USB dongle GBDU 60 is a Bluetooth v2.0+EDR complaint product that can be used with any desktop or notebook PC to wirelessly connect and synchronize with other Bluetooth-enabled devices. The GBDU 60 USB dongle connects seamlessly through an available USB port. The GBDU 60 USB dongle features a class 2 radio, with an integral antenna, and has an operational range of 20 meters (33 ft). The USB dongle is compatible with Microsoft Windows 98 SE, ME, NT, 2000 and XP.