1) 2-in-1 design for Bluetooth USB adapter build in card readers 2) Enables the deployment of Bluetooth capabilities into notebook computers, Desktops and tablet PCs, compatible with all PC chipset vendors, fully compliant To the HCI interface specification 3) Compact design easy to carry in your pockets 4) Both SD and MMC memory cards supported, a convenient and fast data exchange Device for MP3 players, PDA, digital cameras 5) One piece size for multi-function: Bluetooth, card reader 6) Hot-swappable supported 7) High transfer rate with USB 2.0 8) Adaptive frequency hopping (AFH) 9) No external power required, low power consumption 10) Supports Bluetooth V2.0 EDR, max. Transfer rate up to 3Mbps 11) ScatterMode, QoS, eSCO, fast connect, LMP improvements and synchronization 12) Automatic switch bluetooth and card reader function 13) LED indicator: Input card and green flashing means reading card or store data; Pull out card and orange flashing means bluetooth is working, pull out card and green flashing means bluetooth stop, pull out card and orange and green flashing alternate means is transferring data via bluetooth;