Bluetooth 5.3 Dongle Supported protocol: HFP/HSP (hands-free phone/headset), A2DP/AVRCP (stereo music), HID/HOGP (keyboard and mouse), Android smartphones, etc. 1, 5.3 Bluetooth dual-mode dual-channel, compatible with Bluetooth 2.0,3.0,4.0,5.0 and 5.1 specifications.
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