Features: By using the CF 813B USB WiFI adapter, you can upgrades your PC,laptop to work with the latestWiFi router for faster speed and extendedrange DualBand: Alternative 11AC(5.8G) and 11N(2.4G) connections for TV shows, HDmovies, streaming, and online gaming to avoid wireless interference. 450Mbps Wireless Speed at 5.8GHz and 200Mbps Speed at 2.4GHz Support bluetoothcomptible version B4.2,and can help your computer create a WiFi hotspots. Mini & portable design for easy carrying, it's convenient to use. Specifications: BluetoothComptibleSpecification Chipset :RTL8821CU BluetoothComptible version: BT4.2 Transmission distance: 10meters RF power: 18dBm (maximum) Antenna gain: 2dBi Wifi Speed:650Mbps Support operating system: WIN 7/WIN8/10 operating system Note:Bluetooth driver do not support windows XP/ VISTA /Mac WIFI Description: Supported standards and protocols: IEEE 802.11n, IEEE 802.11g, IEEE 802.11b,IEEE 802.11ac CSMA/CA with ACK Transmission speed: 650Mbps Frequency range: 2.4 to 2.4835GHz 5.180-5.825GHz Antenna gain: 2dBi Support operating system: Windows 2000/XP/Vista/WIN 7/WIN 8/10/MAC OS Operating Environment: Operating Temperature: -20degC to 45degC Storage temperature: -40degC to 70degC Size：approx 27x16x7mm/1.06x0.63x0.27in Package Includes: 1PC 650Mbps BT4.2 Wireless Adapter note: Due to the problems of lighting effects and shooting angles, there will be certain tolerances in the product, please understand. Please allow 0-1cm error due to the manual measurment.