vs
5.6Noise control & calls4.4
6.1Battery4.3
Why is QuietComfort Earbuds (2nd Gen) better than SM-823D?
- Active noise cancellingYes · SM-823D: No
- Battery life8 h vs 7 h+14%
- Charging time1.5 h vs 2 h+33%
Why is SM-823D better than QuietComfort Earbuds (2nd Gen)?
SM-823D 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 |
| Lowest frequency | — | 20 Hz |
| Highest frequency | — | 20,000 Hz |
| Adjustable equaliser | Yes | — |
| Noise control | ||
| Active noise cancelling | Yes | No |
| Transparency / ambient mode | Yes | — |
| Microphones | 3 | — |
| Noise reduction for calls | — | Yes |
| Battery & charging | ||
| Battery life | 8 h | 7 h |
| Total with charging case | 32 h | — |
| Charging time | 1.5 h | 2 h |
| Wireless charging (case) | Yes | — |
| Connectivity | ||
| Wireless | Yes | Yes |
| Bluetooth version | 5.3 | — |
| Bluetooth codecs | SBC | — |
| Hi-res codec (LDAC / aptX HD / LHDC) | No | — |
| aptX | No | — |
| LDAC | No | — |
| Multipoint (two devices) | Yes | — |
| USB-C | Yes | — |
| Design & build | ||
| Earbud weight (each) | 10 g | — |
| Protection rating | IPX4 | — |
| Water resistance (IPx) | IPx4 | — |
| Colours | — | White |
| Features | ||
| Touch controls | Yes | — |
| Hands-free calls | Yes | — |
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