Features: Adopts real 5.4 Bluetooth chip, complies with Bluetooth 5.3 technical specifications, LMP: 13.X, BLE/EDR dual mode low power transmission. Further transmission distance: 150m super long transmission distance (no blocking), antenna upgrade, strong signal. More stable transmission rate: 3Mbps transmission rate, providing high-speed file and audio data transmission. Driver-free use: supports driver-free plug-and-play, no CD-ROM installation, convenient and simple. Ultra-low latency and very fast linking, intelligent sleep wake-up energy saving, 24-bit CRC check against interference, adaptive frequency hopping to reduce crosstalk. Bluetooth 2.0, Bluetooth 2.1, Bluetooth 3.0, Bluetooth 4.0, Bluetooth 5.0, Bluetooth 5.1, Bluetooth 5.3 and other specifications backward compatible. USB2.0 interface (universal USB3.0). Can connect 7 devices at the same time, strong compatibility, one adapter can meet multiple needs. Technology upgrades, a link, subsequent use automatically back to the connection, without the need for secondary pairing. 5.4 Bluetooth adapter is the current high version, fast speed of a new product, with strong compatibility, high-speed stability, receiving distance farther. Applicable operating systems: support for Windows7/win8.1/win10/11 mainstream operating systems! (Win8.1/10/11 drive-free use) Realize the computer and other Bluetooth protocol devices (Bluetooth headset/speaker/mouse/keyboard/gamepad/mobile phone/printer, etc.) wireless Bluetooth connection for audio, data, image transmission. Package size and weight: 15.5*8*1.6cm, 36g Packing size and weight: 200/ctn, 46*35*36cm, 8kg