vs
5.1Noise control & calls8.9
9.4Battery9.2
Why is CMF Buds 2 better than P31i?
- Battery life13 h vs 10 h+30%
- Total with charging case55 h vs 50 h+10%
Why is P31i better than CMF Buds 2?
- Hi-res codec (LDAC / aptX HD / LHDC)No · CMF Buds 2: Yes
- Microphones2 vs 63×
- Battery life with ANC32 h vs 40 h+25%
- LDACNo · CMF Buds 2: Yes
- Bluetooth version5.4 vs 6.1+13%
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 | — | 40,000 Hz |
| Sensitivity | 48 dB | — |
| Spatial / 3D audio | Yes | — |
| Hi-Res Audio | — | Yes |
| Adjustable equaliser | Yes | Yes |
| Noise control | ||
| Active noise cancelling | Yes | Yes |
| Adaptive ANC | — | Yes |
| Noise reduction (claimed) | — | 52 dB |
| Transparency / ambient mode | Yes | — |
| Microphones | 2 | 6 |
| Noise reduction for calls | — | Yes |
| Battery & charging | ||
| Battery life | 13 h | 10 h |
| Battery life with ANC | 32 h | 40 h |
| Total with charging case | 55 h | 50 h |
| Battery capacity | 53 mAh | — |
| Charging time | 1.5 h | — |
| Quick charge (claimed) | — | 10 min → 3,5 h |
| Fast charging support | Yes | Yes |
| Connectivity | ||
| Wireless | Yes | Yes |
| Bluetooth version | 5.4 | 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 |
| USB-C | Yes | — |
| Low-latency game mode | Yes | — |
| Smart & streaming | ||
| Companion app | — | Yes |
| Design & build | ||
| Earbud weight (each) | 4.5 g | — |
| 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 | Yes |
| Hands-free calls | Yes | Yes |
