Item No.: MX-BD010 Parameter: Chipset: CSR Bluetooth Version: V2.0 Working distance: 20 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 temperature: -20℃-75℃. Storage temperature: -40℃-85℃. Operating humidity: 10%-90%. Works with bluetooth enabled device.