vs
9.3Noise control & calls8.8
4.3Battery9.5
Why is 4XD1R31390 better than Buds Air 8?
- Charging time1 h vs 2 h2×
- Driver size12.2 mm vs 11 mm+11%
Why is Buds Air 8 better than 4XD1R31390?
- Battery life7 h vs 14 h2×
- Battery life with ANC4 h vs 30 h7.5×
Specifications
Side by side
| Sound | ||
| Fit | In-ear | In-ear |
| Ear cup design | — | Closed-back |
| Driver type | — | Dynamic |
| Driver size | 12.2 mm | 11 mm |
| Number of drivers | — | 2 |
| Lowest frequency | 20 Hz | — |
| Highest frequency | 20,000 Hz | — |
| Impedance | 16 Ω | — |
| Spatial / 3D audio | — | Yes |
| Hi-Res Audio | — | Yes |
| Noise control | ||
| Active noise cancelling | Yes | Yes |
| Microphones | — | 6 |
| Noise reduction for calls | — | Yes |
| Battery & charging | ||
| Battery life | 7 h | 14 h |
| Battery life with ANC | 4 h | 30 h |
| Total with charging case | — | 58 h |
| Battery capacity | — | 62 mAh |
| Charging time | 1 h | 2 h |
| Connectivity | ||
| Wireless | Yes | Yes |
| Bluetooth version | 5.3 | 5.4 |
| Bluetooth codecs | — | LHDC, AAC, SBC |
| Hi-res codec (LDAC / aptX HD / LHDC) | — | Yes |
| aptX | — | No |
| LDAC | — | No |
| Multipoint (two devices) | Yes | Yes |
| USB-C | Yes | Yes |
| Low-latency game mode | — | Yes |
| Smart & streaming | ||
| Companion app | — | Yes |
| Design & build | ||
| Weight | 47 g | — |
| Protection rating | IP55 | IP55 |
| Water resistance (IPx) | IPx5 | IPx5 |
| Dust protection (IP) | 5 | 5 |
| Features | ||
| Touch controls | Yes | Yes |
| Hands-free calls | Yes | Yes |
