| Sell USB 2.0 bluetooth super mini dongle ,smaller than a coin,easy to use ,easy to take .
CSR case , in line with bluetooth v1.2, v2.0+DER, v2.1+EDR version , in line with USB v1.1,v2.0 。
2.Operation freguency band :from 2.4GHz to 2.483GHz , using FHSS technology ( hopping fequency and widening frequency ) .... |