Why is FD11 better than C50i?
FD11 has no measurable advantages in this pair.
Why is C50i better than FD11?
C50i has no measurable advantages in this pair.
Specifications
Side by side
| Sound | ||
| Fit | In-ear | Bone conduction |
| Ear cup design | Closed-back | Open-back |
| Driver type | Dynamic | Dynamic |
| Driver size | — | 12 mm |
| Lowest frequency | 20 Hz | 20 Hz |
| Highest frequency | 20,000 Hz | 20,000 Hz |
| Impedance | 24 Ω | 14 Ω |
| Sensitivity | 111 dB | — |
| Hi-Res Audio | Yes | Yes |
| Adjustable equaliser | — | Yes |
| Noise control | ||
| Noise reduction for calls | — | Yes |
| Battery & charging | ||
| Battery life | — | 7 h |
| Connectivity | ||
| Wireless | No | Yes |
| Bluetooth version | — | 6 |
| Bluetooth codecs | — | LDAC |
| Hi-res codec (LDAC / aptX HD / LHDC) | — | Yes |
| aptX | — | No |
| LDAC | — | Yes |
| Multipoint (two devices) | — | Yes |
| USB-C | — | Yes |
| 3.5 mm jack / AUX | Yes | — |
| Design & build | ||
| Weight | 3 g | — |
| Earbud weight (each) | — | 5.5 g |
| Protection rating | — | IP55 |
| Water resistance (IPx) | — | IPx5 |
| Dust protection (IP) | — | 5 |
| Colours | Silver | Midnight Black, Purple, Pearl White |
| Features | ||
| Touch controls | — | Yes |
| Hands-free calls | — | Yes |
