USB Bluetooth 5.4 Dongle Adapter for PC Speaker Wireless Mouse Keyboard Music Au
5.4 Bluetooth dual-mode dual-channel, compatible with Bluetooth 2.0, 3.0, 4.0, 5.0, 5.1 and 5.3 specifications;. Drive-free 5.4 Bluetooth adapter. Bluetooth version: 5.4 (BLE low power, low latency);.