vs
9.8Sound9.3
9.3Noise control & calls3.0
4.3Battery6.7
Why is FreeBuds Pro 4 better than OpenWear Stereo Pro?
- Active noise cancellingYes · OpenWear Stereo Pro: No
- Lowest frequency14 Hz vs 20 Hz+43%
- Highest frequency48,000 Hz vs 40,000 Hz+20%
Why is OpenWear Stereo Pro better than FreeBuds Pro 4?
- Battery life7 h vs 8 h+14%
- Total with charging case33 h vs 45 h+36%
- Number of drivers2 vs 42×
- Bluetooth version5.2 vs 5.4+4%
Specifications
Side by side
| Sound | ||
| Fit | In-ear | Open-ear |
| Ear cup design | Closed-back | Open-back |
| Driver type | Planar magnetic | Dynamic |
| Driver size | 11 mm | — |
| Number of drivers | 2 | 4 |
| Lowest frequency | 14 Hz | 20 Hz |
| Highest frequency | 48,000 Hz | 40,000 Hz |
| Spatial / 3D audio | — | Yes |
| Head tracking | — | Yes |
| Hi-Res Audio | Yes | Yes |
| Noise control | ||
| Active noise cancelling | Yes | No |
| Battery & charging | ||
| Battery life | 7 h | 8 h |
| Battery life with ANC | 5 h | — |
| Total with charging case | 33 h | 45 h |
| Battery capacity | 55 mAh | 56 mAh |
| Charging time | 2.5 h | — |
| Quick charge (claimed) | — | 10 min → 2 h |
| Fast charging support | Yes | Yes |
| Connectivity | ||
| Wireless | Yes | Yes |
| Bluetooth version | 5.2 | 5.4 |
| Bluetooth codecs | LDAC, AAC, SBC | LDAC, AAC, SBC |
| Hi-res codec (LDAC / aptX HD / LHDC) | Yes | Yes |
| aptX | No | No |
| LDAC | Yes | Yes |
| Multipoint (two devices) | Yes | — |
| USB-C | Yes | Yes |
| Smart & streaming | ||
| Companion app | — | Yes |
| Design & build | ||
| Weight | — | 72 g |
| Protection rating | IP54 | IP54 |
| Water resistance (IPx) | IPx4 | IPx4 |
| Dust protection (IP) | 5 | 5 |
| Features | ||
| Touch controls | Yes | — |
| Hands-free calls | — | Yes |
