vs
4.2Battery5.0
Why is QuietComfort Earbuds II better than CX 400BT True Wireless CX400TW1?
- Earbud weight (each)6 g vs 12 g2×
- Bluetooth version5.3 vs 5.1+4%
- Charging time1 h vs 1.5 h+50%
Why is CX 400BT True Wireless CX400TW1 better than QuietComfort Earbuds II?
- Battery life6 h vs 7 h+17%
- aptXNo · QuietComfort Earbuds II: Yes
Specifications
Side by side
| Sound | ||
| Fit | Semi-in-ear (open) | In-ear |
| Ear cup design | Closed-back | Closed-back |
| Driver type | Dynamic | Dynamic |
| Driver size | — | 7 mm |
| Lowest frequency | — | 5 Hz |
| Highest frequency | — | 21,000 Hz |
| Sensitivity | — | 107 dB |
| Adjustable equaliser | Yes | Yes |
| Noise control | ||
| Active noise cancelling | Yes | — |
| Transparency / ambient mode | Yes | — |
| Microphones | 8 | — |
| Battery & charging | ||
| Battery life | 6 h | 7 h |
| Total with charging case | 24 h | — |
| Charging time | 1 h | 1.5 h |
| Quick charge (claimed) | 20 min → 2 h | — |
| Fast charging support | Yes | — |
| Connectivity | ||
| Wireless | Yes | Yes |
| Bluetooth version | 5.3 | 5.1 |
| Bluetooth codecs | AAC, SBC | aptX, AAC, SBC |
| Hi-res codec (LDAC / aptX HD / LHDC) | No | No |
| aptX | No | Yes |
| LDAC | No | No |
| USB-C | Yes | Yes |
| Design & build | ||
| Earbud weight (each) | 6 g | 12 g |
| Protection rating | IPX4 | — |
| Water resistance (IPx) | IPx4 | — |
| Features | ||
| Touch controls | Yes | — |
| Hands-free calls | Yes | Yes |
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