8.5Battery4.3
Why is Comfo Flex better than Spark?
- Battery life10 h vs 7 h+43%
- Total with charging case40 h vs 30 h+33%
- Highest frequency40,000 Hz vs 20,000 Hz2×
- LDACYes · Spark: No
Why is Spark better than Comfo Flex?
Spark has no measurable advantages in this pair.
Specifications
Side by side
| Sound | ||
| Fit | Open-ear | In-ear |
| Ear cup design | — | Open-back |
| Driver type | — | Dynamic |
| Lowest frequency | 20 Hz | 20 Hz |
| Highest frequency | 40,000 Hz | 20,000 Hz |
| Sensitivity | 90 dB | — |
| Hi-Res Audio | — | Yes |
| Noise control | ||
| Active noise cancelling | — | No |
| Battery & charging | ||
| Battery life | 10 h | 7 h |
| Total with charging case | 40 h | 30 h |
| Battery capacity | 70 mAh | — |
| Connectivity | ||
| Wireless | Yes | Yes |
| Bluetooth version | 5.4 | 5.4 |
| Bluetooth codecs | LDAC, AAC, SBC | LHDC, AAC, SBC |
| Hi-res codec (LDAC / aptX HD / LHDC) | Yes | Yes |
| aptX | No | No |
| LDAC | Yes | No |
| Multipoint (two devices) | — | Yes |
| USB-C | Yes | — |
| Design & build | ||
| Protection rating | IP55 | IP55 |
| Water resistance (IPx) | IPx5 | IPx5 |
| Dust protection (IP) | 5 | 5 |
| Features | ||
| Touch controls | — | Yes |
