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 extendedrangeDualBand: 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 2.4GHzSupport 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:BluetoothComptibleSpecificationChipset :RTL8821CUBluetoothComptible version: BT4.2Transmission distance: 10metersRF power: 18dBm (maximum)Antenna gain: 2dBiWifi Speed:650MbpsSupport operating system: WIN 7/WIN8/10 operating systemNote:Bluetooth driver do not support windows XP/ VISTA /MacWIFISupported standards and protocols: IEEE 802.11n, IEEE 802.11g, IEEE 802.11b,IEEE 802.11acCSMA/CA with ACKTransmission speed: 650MbpsFrequency range: 2.4 to 2.4835GHz 5.1805.825GHzAntenna gain: 2dBiSupport operating system: Windows 2000/XP/Vista/WIN 7/WIN 8/10/MAC OSOperating Environment: Operating Temperature: 20degC to 45degCStorage temperature: 40degC to 70degCSize:approx 27x16x7mm/1.06x0.63x0.27inNote:Due to the problems of lighting effects and shooting angles, there will be certain tolerances in the product, please understand.Please allow 01cm error due to the manual measurment.Package includes:1PC 650Mbps BT4.2 Wireless Adapter