The Energizer Energy E551S supports 5 codecs (aptX HD, LDAC, AAC, aptX, SBC). The BenQ-Siemens EF91 supports 1 codec (SBC).
| Codec | Energizer Energy E551S Details | Change |
BenQ-Siemens EF91 Details | Change |
|---|---|---|
| aptX LL | No | No |
| aptX HD | Yes | No |
| LDAC | Yes | No |
| AAC | Yes | No |
| UHQ | No | No |
| aptX | Yes | No |
| SBC | Yes | Yes |
| Bluetooth Version | 4.0 | 1.2 |
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