The Apple Watch Series 4 Aluminum supports 1 codec (SBC). The Sony Xperia 1 III supports 3 codecs (aptX HD, aptX, SBC).
| Codec | Apple Watch Series 4 Aluminum Details | Change |
Sony Xperia 1 III Details | Change |
|---|---|---|
| aptX LL | No | No |
| aptX HD | No | Yes |
| LDAC | No | No |
| AAC | No | No |
| UHQ | No | No |
| aptX | No | Yes |
| SBC | Yes | Yes |
| Bluetooth Version | 5.0 | 5.2 |
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