The Apple Watch Series 3 and Audio-Technica ATH-DSR9BT have 2 common Bluetooth A2DP audio codecs (AAC, SBC). The Apple Watch Series 3 supports 2 codecs (AAC, SBC). The Audio-Technica ATH-DSR9BT supports 4 codecs (aptX HD, AAC, aptX, SBC).
| Codec | Apple Watch Series 3 Details | Change |
Audio-Technica ATH-DSR9BT Details | Change |
|---|---|---|
| aptX LL | No | No |
| aptX HD | No | Yes |
| LDAC | No | No |
| AAC | Yes | Yes |
| UHQ | No | No |
| aptX | No | Yes |
| SBC | Yes | Yes |
| Bluetooth Version | 4.2 | 4.2 |
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