The HMD XR21 and QCY QY19 have 2 common Bluetooth A2DP audio codecs (aptX, SBC). The HMD XR21 supports 2 codecs (aptX, SBC). The QCY QY19 supports 2 codecs (aptX, SBC).
| Codec | HMD XR21 Details | Change |
QCY QY19 Details | Change |
|---|---|---|
| aptX LL | No | No |
| aptX HD | No | No |
| LDAC | No | No |
| AAC | No | No |
| UHQ | No | No |
| aptX | Yes | Yes |
| SBC | Yes | Yes |
| Bluetooth Version | 5.1 | 4.1 |
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