vs
3.0Noise control & calls3.0
2.0Battery4.5
Why is BMW M True Wireless Earphones better than C40i?
BMW M True Wireless Earphones has no measurable advantages in this pair.
Why is C40i better than BMW M True Wireless Earphones?
- Battery life4 h vs 7 h+75%
- Total with charging case14 h vs 21 h+50%
- Bluetooth version5.1 vs 5.4+6%
Specifications
Side by side
| Sound | ||
| Fit | In-ear | In-ear |
| Ear cup design | Closed-back | Open-back |
| Driver type | Dynamic | Dynamic |
| Driver size | — | 12 mm |
| Number of drivers | — | 1 |
| Lowest frequency | — | 20 Hz |
| Highest frequency | — | 20,000 Hz |
| Impedance | — | 22 Ω |
| Hi-Res Audio | — | Yes |
| Adjustable equaliser | — | Yes |
| Noise control | ||
| Active noise cancelling | No | No |
| Battery & charging | ||
| Battery life | 4 h | 7 h |
| Total with charging case | 14 h | 21 h |
| Battery capacity | 30 mAh | — |
| Charging time | — | 1 h |
| Quick charge (claimed) | — | 10 min → 5 h |
| Fast charging support | — | Yes |
| Connectivity | ||
| Wireless | Yes | Yes |
| Bluetooth version | 5.1 | 5.4 |
| Bluetooth codecs | — | AAC, SBC |
| Hi-res codec (LDAC / aptX HD / LHDC) | — | No |
| aptX | — | No |
| LDAC | — | No |
| Multipoint (two devices) | — | Yes |
| USB-C | — | Yes |
| Design & build | ||
| Earbud weight (each) | — | 5.8 g |
| Protection rating | — | IPX4 |
| Water resistance (IPx) | — | IPx4 |
| Colours | Black | Midnight Black, Desert Bronze, Clarity Black |
| Features | ||
| Touch controls | — | Yes |
| Hands-free calls | — | Yes |
