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9.3Noise control & calls7.2
Why is Galaxy Buds FE SM-R400 better than EAH-AZ40M2?
Galaxy Buds FE SM-R400 has no measurable advantages in this pair.
Why is EAH-AZ40M2 better than Galaxy Buds FE SM-R400?
EAH-AZ40M2 has no measurable advantages in this pair.
Specifications
Side by side
| Sound | ||
| Fit | In-ear | In-ear |
| Ear cup design | Closed-back | Closed-back |
| Driver type | Dynamic | Dynamic |
| Driver size | — | 6 mm |
| Lowest frequency | — | 20 Hz |
| Highest frequency | — | 40,000 Hz |
| Hi-Res Audio | — | Yes |
| Adjustable equaliser | — | Yes |
| Noise control | ||
| Active noise cancelling | Yes | Yes |
| Transparency / ambient mode | — | Yes |
| Battery & charging | ||
| Battery life | — | 7 h |
| Battery life with ANC | — | 5 h |
| Total with charging case | — | 24 h |
| Battery capacity | 60 mAh | — |
| Charging time | — | 2 h |
| Fast charging support | — | Yes |
| Connectivity | ||
| Wireless | Yes | Yes |
| Bluetooth version | 5.2 | 5.3 |
| Bluetooth codecs | — | LDAC, AAC, SBC |
| Hi-res codec (LDAC / aptX HD / LHDC) | — | Yes |
| aptX | — | No |
| LDAC | — | Yes |
| Multipoint (two devices) | — | Yes |
| USB-C | — | Yes |
| Smart & streaming | ||
| Voice assistant | Bixby | Alexa |
| Design & build | ||
| Earbud weight (each) | — | 5 g |
| Protection rating | — | IPX4 |
| Water resistance (IPx) | — | IPx4 |
| Features | ||
| Touch controls | Yes | Yes |
| Hands-free calls | — | Yes |
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