vs
5.1Noise control & calls6.1
9.4Battery9.2
8.7Build & features8.1
Why is CMF Buds 2 better than P40i?
- Battery life with ANC32 h vs 8 h4×
- Battery life13 h vs 12 h+8%
- Earbud weight (each)4.5 g vs 5 g+11%
Why is P40i better than CMF Buds 2?
- Microphones2 vs 63×
- Total with charging case55 h vs 60 h+9%
- Charging time1.5 h vs 1 h+50%
Specifications
Side by side
| Sound | ||
| Fit | In-ear | In-ear |
| Ear cup design | — | Closed-back |
| Driver type | Dynamic | Dynamic |
| Driver size | 11 mm | 11 mm |
| Number of drivers | — | 1 |
| Lowest frequency | — | 20 Hz |
| Highest frequency | — | 20,000 Hz |
| Impedance | — | 14 Ω |
| Sensitivity | 48 dB | — |
| Spatial / 3D audio | Yes | — |
| Adjustable equaliser | Yes | Yes |
| Noise control | ||
| Active noise cancelling | Yes | Yes |
| Adaptive ANC | — | Yes |
| Transparency / ambient mode | Yes | Yes |
| Microphones | 2 | 6 |
| Battery & charging | ||
| Battery life | 13 h | 12 h |
| Battery life with ANC | 32 h | 8 h |
| Total with charging case | 55 h | 60 h |
| Battery capacity | 53 mAh | — |
| Charging time | 1.5 h | 1 h |
| Quick charge (claimed) | — | 10 min → 5 h |
| Fast charging support | Yes | Yes |
| Wireless charging (case) | — | Yes |
| Connectivity | ||
| Wireless | Yes | Yes |
| Bluetooth version | 5.4 | 5.3 |
| Bluetooth codecs | AAC, SBC | AAC, SBC |
| Hi-res codec (LDAC / aptX HD / LHDC) | No | No |
| aptX | No | No |
| LDAC | No | No |
| Multipoint (two devices) | Yes | Yes |
| USB-C | Yes | Yes |
| Low-latency game mode | Yes | — |
| Smart & streaming | ||
| Companion app | — | Yes |
| Design & build | ||
| Earbud weight (each) | 4.5 g | 5 g |
| Protection rating | IP55 | IPX5 |
| Water resistance (IPx) | IPx5 | IPx5 |
| Dust protection (IP) | 5 | — |
| Colours | — | Black, Oat White, Navy Blue, Purple |
| Features | ||
| Touch controls | Yes | Yes |
| Hands-free calls | Yes | Yes |
