Main chip: RTL8723DU Bluetooth Instructions:Bluetooth version: V4.2 Bus type: USB1.1/USB2.0 mission distance: 10 meters RF power: 10dBm (max) Antenna Gain: 2dBi mission speed: 3M/S Working current: 100mA - 200mA(BT+WIFI) The current varies with the working mode Support operating system: WIN 7/WIN8/10/11 operating system WIFI description: Supported standards and protocols: IEEE 802.11n, IEEE 802.11g, IEEE 802.11b, CSMA/CA with ACK mission speed: 150Mbps Frequency range: 2.4~2.4835GHz Working channel: 1-14 Modulation: 802.11g/n: OFDM 802.11b: CCK(11, 5.5Mbps), QPSK(2Mbps), BPSK(1Mbps) mission rate: 802.11b: 11, 5.5, 2, 1 Mbps 802.11g: 54, 48, 36, 24, 18, 12, 9, 6 Mbps 802011n: up to 150Mbps Receive Sensitivity: 130M: -65dBm@10% PER; 108M: -65dBm@10% PER; 54M: -65dBm@10% PER; 11M: -87dBm@8% PER; mission distance: Up to 100 meters indoors, up to 200 meters outdoors (depending on the environment) RF power: 16dBm (max) Antenna Gain: 2dBi Spread Spect Technology: DSSS (Direct Sequence Spread Spect ) Working current: 100mA - 200mA(BT+WIFI) The current varies with the working mode Support operating system: Windows 2000/XP/Vista/WIN 7/WIN 8/10/MAC OS operating system Use environment: Operating temperature: -20Celsius to 45Celsius Storage temperature: -40Celsius to 70Celsius Colour:black Material:Metal+ABS Package Contents: 1 x USB WiFi bluetooth adapter Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.