What Bluetooth protocols does the Xiaomi Buds 5 Pro support?

The Bluetooth chip model of the Xiaomi Buds 5 Pro is QCC-7228-0-PSP244-TR-03-0. The Bluetooth version is 5.4. The communication range can be up to 10m, which is measured in an open space that is free of obstacles. The Bluetooth protocols are Bluetooth Low Energy, HFP, A2DP and AVRCP. The Bluetooth audio codec includes SBC, AAC, aptX Lossless, aptx Adaptive and LC3.
Note:
If you are in the office or at home, the effective range will be reduced due to walls or other obstacles. Therefore, if you put your phone in the living room and bring the earbuds to the bedroom, the earbuds will freeze or the Bluetooth connection will be disconnected.