Latest Bluetooth 5.1 standard: The latest Bluetooth 5.1 standard, the measured transmission distance is 3 times that of the 4.0 standard, which can easily make the transmission distance of the device reach 100 meters Compatible with multiple operating systems: Compatible with windows, linux, Android and other operating systems, can be widely used on various devices Throughput up to 3M: Throughput up to 3M, which can meet the needs of data, control signals, audio and other applications in most low-power devices Specification: Chip: RTL8761BUV-CG Protocol standard: BT 5.1 Interface: USB 2.0 Frequency range: 2.402 ~ 2.480GHz Transmit power: 8.5dBm(Max) Receiving sensitivity: -94.5dBm(Min) Antenna: PCB built-in antenna Input power: USB powered Security features: Bluetooth headset/keyboard/mouse/speaker Operating environment: Working temperature: 0~40 (32~104) Storage temperature: -40~70 (-40~158) Working humidity: 10% ~ 90% RH without condensation Storage humidity: 5% ~ 90% RH without condensation Operating system: Windows 7, Windows 8/8.1, Windows 10