vs
8.4Noise control & calls8.9
9.0Battery9.2
Why is Nord Buds 4 better than P31i?
- Battery life13 h vs 10 h+30%
- Total with charging case54 h vs 50 h+8%
Why is P31i better than Nord Buds 4?
- Battery life with ANC6 h vs 40 h6.7×
- Hi-res codec (LDAC / aptX HD / LHDC)No · Nord Buds 4: Yes
- Highest frequency20,000 Hz vs 40,000 Hz2×
- LDACNo · Nord Buds 4: Yes
Specifications
Side by side
| Sound | ||
| Fit | In-ear | In-ear |
| Ear cup design | Closed-back | Closed-back |
| Driver type | Dynamic | Dynamic |
| Driver size | 12 mm | — |
| Lowest frequency | 20 Hz | 20 Hz |
| Highest frequency | 20,000 Hz | 40,000 Hz |
| Impedance | 28 Ω | — |
| Sensitivity | 122 dB | — |
| Spatial / 3D audio | Yes | — |
| Hi-Res Audio | — | Yes |
| Adjustable equaliser | — | Yes |
| Noise control | ||
| Active noise cancelling | Yes | Yes |
| Adaptive ANC | — | Yes |
| Noise reduction (claimed) | — | 52 dB |
| Transparency / ambient mode | Yes | — |
| Microphones | 6 | 6 |
| Noise reduction for calls | Yes | Yes |
| Battery & charging | ||
| Battery life | 13 h | 10 h |
| Battery life with ANC | 6 h | 40 h |
| Total with charging case | 54 h | 50 h |
| Quick charge (claimed) | — | 10 min → 3,5 h |
| Fast charging support | — | Yes |
| Connectivity | ||
| Wireless | Yes | Yes |
| Bluetooth version | 6.1 | 6.1 |
| Bluetooth codecs | AAC, SBC | LDAC, SBC |
| Hi-res codec (LDAC / aptX HD / LHDC) | No | Yes |
| aptX | No | No |
| LDAC | No | Yes |
| Multipoint (two devices) | Yes | Yes |
| Smart & streaming | ||
| Companion app | — | Yes |
| Design & build | ||
| Protection rating | IP55 | IP55 |
| Water resistance (IPx) | IPx5 | IPx5 |
| Dust protection (IP) | 5 | 5 |
| Colours | — | Midnight Black, Pearl White, Light Blue, Rose Gold |
| Features | ||
| Touch controls | — | Yes |
| Hands-free calls | — | Yes |
