bluetooth dongle v2.0 1) bluetooth v2.0 and EDR compliant 2) communication distance:up to 30 meters 3)output class:class II 4)Frequency range :2.402-2.4835GHZ unlicensed ISM band 5)system requirement :pc equipped with a pentium 300MHZ(or greater )128mb or (or more )ram and a USBA POT 6) operation systerm: windows 98se/me/200/xp 7)data rate:2.1mbps 8)power comsumption:80ma(max) 9)modulation method :fhss(frequency hopping spread spectrum)