vs
2.5Build & features8.2
Why is OpenFit Air better than Rail?
OpenFit Air has no measurable advantages in this pair.
Why is Rail better than OpenFit Air?
- Battery life6 h vs 9 h+50%
- Lowest frequency50 Hz vs 20 Hz2.5×
- Water resistance (IPx)IPx4 vs IPx5+25%
- Highest frequency16,000 Hz vs 20,000 Hz+25%
Specifications
Side by side
| Sound | ||
| Fit | In-ear | In-ear |
| Ear cup design | Open-back | — |
| Driver type | Dynamic | — |
| Driver size | — | 6 mm |
| Lowest frequency | 50 Hz | 20 Hz |
| Highest frequency | 16,000 Hz | 20,000 Hz |
| Impedance | — | 16 Ω |
| Sensitivity | 96 dB | 100 dB |
| Adjustable equaliser | Yes | Yes |
| Noise control | ||
| Active noise cancelling | No | — |
| Transparency / ambient mode | — | Yes |
| Noise reduction for calls | Yes | — |
| Battery & charging | ||
| Battery life | 6 h | 9 h |
| Total with charging case | 20 h | — |
| Battery capacity | 40 mAh | — |
| Charging time | 1 h | — |
| Fast charging support | Yes | — |
| Connectivity | ||
| Wireless | Yes | Yes |
| Bluetooth version | 5.2 | 5.2 |
| Bluetooth codecs | AAC, SBC | — |
| Hi-res codec (LDAC / aptX HD / LHDC) | No | — |
| aptX | No | — |
| LDAC | No | — |
| Multipoint (two devices) | Yes | Yes |
| USB-C | Yes | Yes |
| Design & build | ||
| Weight | — | 49 g |
| Earbud weight (each) | 8.7 g | — |
| Protection rating | IP54 | IP55 |
| Water resistance (IPx) | IPx4 | IPx5 |
| Dust protection (IP) | 5 | 5 |
| Colours | Black, White, Pink | — |
| Features | ||
| Touch controls | Yes | — |
| Hands-free calls | Yes | Yes |
