Why is AirPods 4 better than SM-823D?
AirPods 4 has no measurable advantages in this pair.
Why is SM-823D better than AirPods 4?
- Battery life5 h vs 7 h+40%
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 |
| Spatial / 3D audio | Yes | — |
| Head tracking | Yes | — |
| Adjustable equaliser | Yes | — |
| Noise control | ||
| Active noise cancelling | No | No |
| Transparency / ambient mode | Yes | — |
| Microphones | 2 | — |
| Noise reduction for calls | Yes | Yes |
| Battery & charging | ||
| Battery life | 5 h | 7 h |
| Total with charging case | 30 h | — |
| Charging time | — | 2 h |
| Quick charge (claimed) | 5 min → 1 h | — |
| Fast charging support | Yes | — |
| Connectivity | ||
| Wireless | Yes | Yes |
| Bluetooth version | 5.3 | — |
| Multipoint (two devices) | Yes | — |
| USB-C | Yes | — |
| Smart & streaming | ||
| Voice assistant | Siri | — |
| Design & build | ||
| Earbud weight (each) | 5.4 g | — |
| Protection rating | IP54 | — |
| Water resistance (IPx) | IPx4 | — |
| Dust protection (IP) | 5 | — |
| Colours | — | White |
| Features | ||
| Touch controls | Yes | — |
| Wear detection (auto pause) | Yes | — |
| Hands-free calls | Yes | — |
