8.5Battery8.0
Why is Comfo Flex better than Buds 4?
- LDACYes · Buds 4: No
Why is Buds 4 better than Comfo Flex?
- Battery life10 h vs 11 h+10%
- Total with charging case40 h vs 45 h+12%
- Lowest frequency20 Hz vs 15 Hz+33%
Specifications
Side by side
| Sound | ||
| Fit | Open-ear | In-ear |
| Lowest frequency | 20 Hz | 15 Hz |
| Highest frequency | 40,000 Hz | 40,000 Hz |
| Impedance | — | 18 Ω |
| Sensitivity | 90 dB | 38 dB |
| Hi-Res Audio | — | Yes |
| Noise control | ||
| Active noise cancelling | — | Yes |
| Transparency / ambient mode | — | Yes |
| Microphones | — | 2 |
| Battery & charging | ||
| Battery life | 10 h | 11 h |
| Battery life with ANC | — | 6 h |
| Total with charging case | 40 h | 45 h |
| Battery capacity | 70 mAh | — |
| Charging time | — | 1.2 h |
| Fast charging support | — | Yes |
| 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 |
| USB-C | Yes | Yes |
| Low-latency game mode | — | Yes |
| Design & build | ||
| Weight | — | 49 g |
| Protection rating | IP55 | IP55 |
| Water resistance (IPx) | IPx5 | IPx5 |
| Dust protection (IP) | 5 | 5 |
