8.5Battery9.3
Why is Comfo Flex better than Tune 255NC?
- Water resistance (IPx)IPx5 vs IPx4+25%
- Highest frequency40,000 Hz vs 20,000 Hz2×
- Battery capacity70 mAh vs 65 mAh+8%
Why is Tune 255NC better than Comfo Flex?
- Battery life10 h vs 12 h+20%
- Total with charging case40 h vs 48 h+20%
Specifications
Side by side
| Sound | ||
| Fit | Open-ear | In-ear |
| Driver size | — | 10 mm |
| Lowest frequency | 20 Hz | 20 Hz |
| Highest frequency | 40,000 Hz | 20,000 Hz |
| Impedance | — | 16 Ω |
| Sensitivity | 90 dB | 100 dB |
| Noise control | ||
| Active noise cancelling | — | Yes |
| Adaptive ANC | — | Yes |
| Transparency / ambient mode | — | Yes |
| Battery & charging | ||
| Battery life | 10 h | 12 h |
| Battery life with ANC | — | 12 h |
| Total with charging case | 40 h | 48 h |
| Battery capacity | 70 mAh | 65 mAh |
| Charging time | — | 2 h |
| Connectivity | ||
| Wireless | Yes | Yes |
| Bluetooth version | 5.4 | 5.3 |
| Bluetooth codecs | LDAC, AAC, SBC | — |
| Hi-res codec (LDAC / aptX HD / LHDC) | Yes | — |
| aptX | No | — |
| LDAC | Yes | — |
| Multipoint (two devices) | — | Yes |
| USB-C | Yes | Yes |
| Smart & streaming | ||
| Companion app | — | Yes |
| Design & build | ||
| Weight | — | 52 g |
| Protection rating | IP55 | IP54 |
| Water resistance (IPx) | IPx5 | IPx4 |
| Dust protection (IP) | 5 | 5 |
| Colours | — | Black |
