Main chip: RTL8723DU Bluetooth: V4.2 Bus Type: USB1.1/USB2.0 Transmission Range: 10 meters RF Power: 10dBm (max) Antenna Gain: 2dBi Transmission Speed: 3M/S Working Current: 100mA - 200mA (varies with mode) Operating System Compatibility: Windows 7/8/10/11 WiFi Standards: IEEE 802.11n/g/b, CSMA/CA with ACK WiFi Transmission Speed: 150Mbps Frequency Range: 2.4~2.4835GHz Working Channels: 1-14 Modulation: OFDM (802.11g/n), CCK/QPSK/BPSK (802.11b) WiFi Transmission Rates: - 802.11b: 11, 5.5, 2, 1 Mbps - 802.11g: 54, 48, 36, 24, 18, 12, 9, 6 Mbps - 802.11n: Up to 150Mbps Receiving Sensitivity: -65dBm to -87dBm (varies by rate) Transmission Distance: Up to 100m indoors, 200m outdoors (environment-dependent) RF Power: 16dBm (max) Spread Spectrum Technology: DSSS Working Current: 100mA - 200mA (varies with mode) Operating Temperature: -20��C to 45��C Storage Temperature: -40��C to 70��C Color: Black Material: Metal + ABS Package Includes: 1 x USB WiFi Bluetooth Adapter Note: Only the listed contents are included. Slight color differences may occur due to lighting and display variations. Measurement error may be +/- 1-3cm.