Why is FreeArc better than Buds 4?
- Charging time0.5 h vs 1.2 h2.4×
- Water resistance (IPx)IPx7 vs IPx5+40%
Why is Buds 4 better than FreeArc?
- Active noise cancellingNo · FreeArc: Yes
- Hi-res codec (LDAC / aptX HD / LHDC)No · FreeArc: Yes
- Highest frequency20,000 Hz vs 40,000 Hz2×
- Bluetooth version5.2 vs 5.4+4%
- Lowest frequency20 Hz vs 15 Hz+33%
Specifications
Side by side
| Sound | ||
| Fit | Open-ear | In-ear |
| Ear cup design | Open-back | — |
| Driver type | Dynamic | — |
| Driver size | 12 mm | — |
| Number of drivers | 4 | — |
| Lowest frequency | 20 Hz | 15 Hz |
| Highest frequency | 20,000 Hz | 40,000 Hz |
| Impedance | 140 Ω | 18 Ω |
| Sensitivity | — | 38 dB |
| Hi-Res Audio | — | Yes |
| Adjustable equaliser | Yes | — |
| Noise control | ||
| Active noise cancelling | No | Yes |
| Transparency / ambient mode | — | Yes |
| Microphones | — | 2 |
| Battery & charging | ||
| Battery life | — | 11 h |
| Battery life with ANC | — | 6 h |
| Total with charging case | — | 45 h |
| Battery capacity | 55 mAh | — |
| Charging time | 0.5 h | 1.2 h |
| Fast charging support | — | Yes |
| Connectivity | ||
| Wireless | Yes | Yes |
| Bluetooth version | 5.2 | 5.4 |
| Bluetooth codecs | AAC, SBC | LHDC, AAC, SBC |
| Hi-res codec (LDAC / aptX HD / LHDC) | No | Yes |
| aptX | No | No |
| LDAC | No | No |
| Multipoint (two devices) | Yes | — |
| USB-C | Yes | Yes |
| Low-latency game mode | — | Yes |
| Design & build | ||
| Weight | — | 49 g |
| Earbud weight (each) | 8.9 g | — |
| Protection rating | IP57 | IP55 |
| Water resistance (IPx) | IPx7 | IPx5 |
| Dust protection (IP) | 5 | 5 |
| Features | ||
| Touch controls | Yes | — |
| Hands-free calls | Yes | — |
