vs
5.3Noise control & calls5.2
5.3Battery8.0
8.3Build & features8.1
Why is Free Pro 3 better than Buds 4?
- aptXYes · Buds 4: No
- Weight42 g vs 49 g+18%
- Microphones3 vs 2+50%
Why is Buds 4 better than Free Pro 3?
- Battery life7.5 h vs 11 h+47%
- Total with charging case33 h vs 45 h+36%
- Charging time1.5 h vs 1.2 h+25%
Specifications
Side by side
| Sound | ||
| Fit | In-ear | In-ear |
| Ear cup design | Closed-back | — |
| Driver type | Dynamic | — |
| Driver size | 7 mm | — |
| Lowest frequency | — | 15 Hz |
| Highest frequency | — | 40,000 Hz |
| Impedance | — | 18 Ω |
| Sensitivity | — | 38 dB |
| Hi-Res Audio | Yes | Yes |
| Adjustable equaliser | Yes | — |
| Noise control | ||
| Active noise cancelling | Yes | Yes |
| Adaptive ANC | Yes | — |
| Transparency / ambient mode | Yes | Yes |
| Microphones | 3 | 2 |
| Noise reduction for calls | Yes | — |
| Battery & charging | ||
| Battery life | 7.5 h | 11 h |
| Battery life with ANC | 6 h | 6 h |
| Total with charging case | 33 h | 45 h |
| Battery capacity | 40 mAh | — |
| Charging time | 1.5 h | 1.2 h |
| Fast charging support | — | Yes |
| Wireless charging (case) | Yes | — |
| Connectivity | ||
| Wireless | Yes | Yes |
| Bluetooth version | 5.3 | 5.4 |
| Bluetooth codecs | aptX Adaptive, AAC, SBC | LHDC, AAC, SBC |
| Hi-res codec (LDAC / aptX HD / LHDC) | Yes | Yes |
| aptX | Yes | No |
| LDAC | No | No |
| Multipoint (two devices) | Yes | — |
| LE Audio | Yes | — |
| USB-C | Yes | Yes |
| Low-latency game mode | Yes | Yes |
| Design & build | ||
| Weight | 42 g | 49 g |
| Earbud weight (each) | 5 g | — |
| Protection rating | IPX5 | IP55 |
| Water resistance (IPx) | IPx5 | IPx5 |
| Dust protection (IP) | — | 5 |
| Features | ||
| Touch controls | Yes | — |
| Hands-free calls | Yes | — |
