vs
7.2Noise control & calls6.0
7.9Battery7.2
Why is Air Pro 4i better than Vibe Flex 2?
- Water resistance (IPx)IPx5 vs IPx4+25%
Why is Vibe Flex 2 better than Air Pro 4i?
- Battery life9.5 h vs 10 h+5%
Specifications
Side by side
| Sound | ||
| Fit | In-ear | In-ear |
| Ear cup design | — | Closed-back |
| Driver type | Dynamic | Dynamic |
| Driver size | 11 mm | — |
| Lowest frequency | — | 20 Hz |
| Highest frequency | — | 20,000 Hz |
| Impedance | 16 Ω | 16 Ω |
| Sensitivity | 98 dB | 98 dB |
| Spatial / 3D audio | Yes | — |
| Hi-Res Audio | Yes | — |
| Adjustable equaliser | Yes | — |
| Noise control | ||
| Active noise cancelling | Yes | Yes |
| Transparency / ambient mode | Yes | Yes |
| Microphones | — | 4 |
| Battery & charging | ||
| Battery life | 9.5 h | 10 h |
| Battery life with ANC | — | 6 h |
| Total with charging case | — | 40 h |
| Charging time | 1 h | — |
| Fast charging support | — | Yes |
| Wireless charging (case) | Yes | — |
| 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 | Yes |
| USB-C | Yes | — |
| Design & build | ||
| Weight | 51 g | — |
| Protection rating | IP55 | IP54 |
| Water resistance (IPx) | IPx5 | IPx4 |
| Dust protection (IP) | 5 | 5 |
| Features | ||
| Touch controls | Yes | — |
| Hands-free calls | Yes | Yes |
