20m Mini Usb Bluetooth Adapter ,CSR Chipset

Specifications 20m usb bluetooth adapter ,CSR chipset IVT 2.7 software bluetooth dongle,USB bluetooth dongle,bluetooth adapter, usb dongle, usb bluetooth adapterChipset:CSRBoundled software:IVT 2.7 Operation Range:20mdifferent ID licenceDifferent colour is available CE, FCC, ROHS Special Features:Bluetooth V2.1 + EDR (Enhanced Data Rate) Up to 3 times faster file transfer rate. Enhanced Data Rata (EDR) compliant for both 2Mbps and 3Mbps modulation modes Class II standard that supports an operating range of 20 meters Supports the newest Vista OS and Mac OS X Unlimited wireless applications (including multimedia applications). It can supports maximum 7 Bluetooth devices at the same time. Improves usability through smoother multi-device scenarios Support A2DP Hi-Fi headset Be able to coexistencePortable, lightweight and mini sized Full speed USB v2.0 interface Rosh leadless material qualified Friendly to operate user's interface and an easy "plug-in" installation Stable, accurate and sensible search of devices in range Specifications Standard: Bluetooth 2.1, EDR, Class II Platform: Windows 2000, XP, Vista, Mac OS Interfaces: USB 2.0 Operating Range: 20 metersFrequency: 2.4GHz~2.4835GHz ISM Band Transmitter Power: +2 dBm(class II) Receiver Sensitivity:         a.(Bluetooth v1.2) <0.1% BER at -80 dBm        b.(Bluetooth v2.0) <-82 dBm (typical), GFSKPower consumption: 70mA(working) Data Speed: Up to 3 Mbps Operation Temperature: -10 ~ 55 degree C Storage Temperature: -20 ~ 65 degree C Humidity: 10% ~ 90% non-condensing DC Power(Supply Voltage): 5V from USBSpread Spectrum: FHSSLED Indicator: Single LEDNet Weight: 7gGross Weight: 41g