The Oppo R15x and Huawei FreeBuds have 2 common Bluetooth A2DP audio codecs (AAC, SBC). The Oppo R15x supports 5 codecs (aptX HD, LDAC, AAC, aptX, SBC). The Huawei FreeBuds supports 2 codecs (AAC, SBC).
| Codec | Oppo R15x Details | Change |
Huawei FreeBuds Details | Change |
|---|---|---|
| aptX LL | No | No |
| aptX HD | Yes | No |
| LDAC | Yes | No |
| AAC | Yes | Yes |
| UHQ | No | No |
| aptX | Yes | No |
| SBC | Yes | Yes |
| Bluetooth Version | 5.0 | 4.2 |
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