6.8Battery7.9
Why is Air 2 better than Liberty 4 Pro?
- Water resistance (IPx)IPx7 vs IPx5+40%
Why is Liberty 4 Pro better than Air 2?
- Battery life9 h vs 10 h+11%
- Microphones4 vs 6+50%
- Charging time1.5 h vs 1 h+50%
- Driver size10 mm vs 10.5 mm+5%
Specifications
Side by side
| Sound | ||
| Fit | In-ear | In-ear |
| Ear cup design | — | Closed-back |
| Driver type | — | Dynamic |
| Driver size | 10 mm | 10.5 mm |
| Lowest frequency | — | 14 Hz |
| Highest frequency | — | 40,000 Hz |
| Spatial / 3D audio | — | Yes |
| Hi-Res Audio | Yes | Yes |
| Adjustable equaliser | Yes | Yes |
| Noise control | ||
| Active noise cancelling | — | Yes |
| Adaptive ANC | — | Yes |
| Transparency / ambient mode | — | Yes |
| Microphones | 4 | 6 |
| Noise reduction for calls | Yes | Yes |
| Battery & charging | ||
| Battery life | 9 h | 10 h |
| Battery life with ANC | — | 7 h |
| Total with charging case | 40 h | 40 h |
| Battery capacity | 40 mAh | — |
| Charging time | 1.5 h | 1 h |
| Quick charge (claimed) | — | 5 min → 4 h |
| Fast charging support | Yes | Yes |
| Wireless charging (case) | — | Yes |
| Connectivity | ||
| Wireless | Yes | Yes |
| Bluetooth version | 5.3 | 5.3 |
| Bluetooth codecs | LDAC, SBC | LDAC |
| Hi-res codec (LDAC / aptX HD / LHDC) | Yes | Yes |
| aptX | No | No |
| LDAC | Yes | Yes |
| Multipoint (two devices) | — | Yes |
| USB-C | Yes | Yes |
| Low-latency game mode | Yes | — |
| Smart & streaming | ||
| Companion app | Yes | — |
| Design & build | ||
| Earbud weight (each) | — | 5.5 g |
| Protection rating | IPX7 | IPX5 |
| Water resistance (IPx) | IPx7 | IPx5 |
| Dust protection (IP) | — | 5 |
| Colours | — | Glossy Black, Pearl White, BIue |
| Features | ||
| Touch controls | Yes | Yes |
| Hands-free calls | — | Yes |
