vs
2.7Battery4.8
4.1Build & features4.8
Why is FreeBuds 3i better than EAH-AZ40?
- Charging time1 h vs 2 h2×
- Driver size10 mm vs 6 mm+67%
Why is EAH-AZ40 better than FreeBuds 3i?
- Battery life3.5 h vs 7.5 h2.1×
- Bluetooth version5 vs 5.2+4%
- Earbud weight (each)5.5 g vs 5 g+10%
Specifications
Side by side
| Sound | ||
| Fit | In-ear | In-ear |
| Ear cup design | — | Closed-back |
| Driver type | Dynamic | Dynamic |
| Driver size | 10 mm | 6 mm |
| Lowest frequency | 20 Hz | 20 Hz |
| Highest frequency | 20,000 Hz | 20,000 Hz |
| Adjustable equaliser | — | Yes |
| Noise control | ||
| Active noise cancelling | Yes | — |
| Transparency / ambient mode | — | Yes |
| Battery & charging | ||
| Battery life | 3.5 h | 7.5 h |
| Charging time | 1 h | 2 h |
| Connectivity | ||
| Wireless | Yes | Yes |
| Bluetooth version | 5 | 5.2 |
| Bluetooth codecs | AAC, SBC | AAC, SBC |
| Hi-res codec (LDAC / aptX HD / LHDC) | No | No |
| aptX | No | No |
| LDAC | No | No |
| Multipoint (two devices) | — | Yes |
| USB-C | Yes | Yes |
| Design & build | ||
| Earbud weight (each) | 5.5 g | 5 g |
| Protection rating | IP54 | IPX4 |
| Water resistance (IPx) | IPx4 | IPx4 |
| Dust protection (IP) | 5 | — |
| Features | ||
| Touch controls | — | Yes |
| Hands-free calls | Yes | Yes |
