vs
5.3Noise control & calls4.4
4.5Battery4.3
Why is Momentum True Wireless 4 better than SM-823D?
- Active noise cancellingYes · SM-823D: No
- Lowest frequency5 Hz vs 20 Hz4×
- Highest frequency21,000 Hz vs 20,000 Hz+5%
Why is SM-823D better than Momentum True Wireless 4?
- Charging time4 h vs 2 h2×
Specifications
Side by side
| Sound | ||
| Fit | In-ear | In-ear |
| Ear cup design | Closed-back | Closed-back |
| Driver type | Dynamic | Dynamic |
| Driver size | 7 mm | — |
| Lowest frequency | 5 Hz | 20 Hz |
| Highest frequency | 21,000 Hz | 20,000 Hz |
| Sensitivity | 107 dB | — |
| Hi-Res Audio | Yes | — |
| Adjustable equaliser | Yes | — |
| Noise control | ||
| Active noise cancelling | Yes | No |
| Adaptive ANC | Yes | — |
| Transparency / ambient mode | Yes | — |
| Microphones | 3 | — |
| Noise reduction for calls | Yes | Yes |
| Battery & charging | ||
| Battery life | 7 h | 7 h |
| Battery life with ANC | 6 h | — |
| Total with charging case | 30 h | — |
| Charging time | 4 h | 2 h |
| Quick charge (claimed) | 8 min → 1 h | — |
| Fast charging support | Yes | — |
| Wireless charging (case) | Yes | — |
| Connectivity | ||
| Wireless | Yes | Yes |
| Bluetooth version | 5.4 | — |
| Bluetooth codecs | aptX Lossless, aptX Adaptive, aptX, LC3, AAC, SBC | — |
| Hi-res codec (LDAC / aptX HD / LHDC) | Yes | — |
| aptX | Yes | — |
| LDAC | No | — |
| Multipoint (two devices) | Yes | — |
| LE Audio | Yes | — |
| Auracast | Yes | — |
| USB-C | Yes | — |
| Smart & streaming | ||
| Voice assistant | Alexa, Google Assistant | — |
| Design & build | ||
| Earbud weight (each) | 6.2 g | — |
| Protection rating | IP54 | — |
| Water resistance (IPx) | IPx4 | — |
| Dust protection (IP) | 5 | — |
| Colours | Black Copper, Black Graphite, Denim, Gold, White Silver | White |
| Features | ||
| Touch controls | Yes | — |
| Hands-free calls | Yes | — |
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