I am an Chinese seller,providing customers with high-quality and low-cost products. The types of products we sell include Home & Kitchen,Health & Beauty,Fashion Clothing,Electronics,Watches & Jewelry,and so on. We keep up with the most popular fashion trends. If you like our products, please follow us and become our followers and fans. Sincerely at your service .Please feel free to contact us if you have any questions.Specifications:This mini USB Bluetooth version 4.0 adapter with high speed transfer rate, simple pairing features.Its a simple solution to enable your computer connect with smartphone, tablet or other Bluetooth device.Compatible with most laptops and PCs, quick and simple setup! Just plug, install and play.Features:Using CSR8510 chip, compliant with the Bluetooth 4.0 specification, dual-mode transmission.Up to 10m transmission distance(non-blocking), signaling strong.Up to 3Mbps transfer rate, providing high-speed file and audio data transmission.USB2.0 interface, more versatile, ultra-portable portable mini stature.Backward compatible with Bluetooth 2.0, Bluetooth 2.1, Bluetooth 3.0 specification.Compatible with most operating system: Windows 98, 98 SE, ME, 2000, XP, Vista Win 7/8 32/64 bit.Type: Bluetooth AdapterMaterial: Plastic + MetalMain Color: Black + GoldenInterface: USB 2.0Bluetooth Standards: Bluetooth 4.0Transmission Distance: 10mProfiles: Bluetooth Low Energy, Dual-Mode BluetoothFrequency Band: 2.4 GHz to 2.4835 GHzSensitivity: -86dBm@.01%BERRF TX Power: +6dBm(ClassП)Transfer Rate: Up to 3.0MbpsChipset: CSR8510Voltage: 5V (USB Bus-Powered)Power Consumption: 5V, 90mA MaxStandby Current (Connected): 0.4uAOperating Frequency: 24MHzOperating Environment Temperature: -20℃ to +70℃,Operating Environment Humidity: 10%-90% Non- CondensingSize: 20mm x 13mm x 5mm/0.79" x 0.51" x 0.20" (Approx.)Package Includes:1 x Bluetooth Adapter (Come with software CD.) a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a