1) Standard Blurtooth spec. V1.2 2) USB V1.2 3) Bus interface USB type A connector 4) Frequency band: ISM 2.4GHz to 2.480GHz 5) Channel bandwidth:1MHZ 6) Piconet support seven slave 7) Link modes: ACL and SCO 8) Data transfer rate ACL:723kbps 9) SCO:64Kbps 10) RF output power:0dBm (1mW) class 2 11) Sensitivity: Better than -80dBm 12) Transmission range:100m (class 2) 13) OS supports: Windows 98SE/2000/ME/XP and later 14) Security parsing, encryption, authentication 15) Input power: DC 5V by USB bus-power 16) LED indicator power