Product features: Using a true 5.4 Bluetooth-Compatible chip, compliant with Bluetooth-Compatible 5.3 technical specifications, LMP: 13. X, BLE/EDR dual-mode low-power transmission. Longer transmission distance: 150m ultra long transmission distance (unobstructed), upgraded antenna, strong signal. More stable transmission rate: 3Mbps transmission rate, providing high-speed file and audio data transmission. Driver free use: Supports plug and play without the need for CD installation, making it convenient and simple. Ultra low latency high-speed connection, intelligent sleep wake-up energy-saving, 24 bit CRC verification to resist interference, adaptive frequency hopping to reduce crosstalk. Downward compatibility with Bluetooth-Compatible 2.0, Bluetooth-Compatible 2.1, Bluetooth-Compatible 3.0, Bluetooth-Compatible 4.0, Bluetooth-Compatible 5.0, Bluetooth-Compatible 5.1, Bluetooth-Compatible 5.3 and other specifications. USB 2.0 interface (universal USB 3.0). It can connect 7 devices simultaneously, with strong compatibility. One adapter can meet multiple needs. Technological upgrade, one-time connection, automatic reconnection for subsequent use, no need for secondary pairing. Product Name: USB Bluetooth-Compatible Adapter Bluetooth-Compatible version: 5.4 Transmission distance: 0-150M Interface type: USB Packaging size: 5.5 * 8 * 1.6CM Working frequency: 2.402GHZ-2.480GHZ Rated voltage: DC 5V Compatible system: Windows 7/8.1/10/11 Packaging includes 1 * Bluetooth-Compatible adapter