vs
2.7Battery5.0
Why is FreeBuds 3i better than CX 400BT True Wireless CX400TW1?
- Earbud weight (each)5.5 g vs 12 g2.2×
- Charging time1 h vs 1.5 h+50%
- Driver size10 mm vs 7 mm+43%
Why is CX 400BT True Wireless CX400TW1 better than FreeBuds 3i?
- Battery life3.5 h vs 7 h2×
- Lowest frequency20 Hz vs 5 Hz4×
- aptXNo · FreeBuds 3i: Yes
- Highest frequency20,000 Hz vs 21,000 Hz+5%
Specifications
Side by side
| Sound | ||
| Fit | In-ear | In-ear |
| Ear cup design | — | Closed-back |
| Driver type | Dynamic | Dynamic |
| Driver size | 10 mm | 7 mm |
| Lowest frequency | 20 Hz | 5 Hz |
| Highest frequency | 20,000 Hz | 21,000 Hz |
| Sensitivity | — | 107 dB |
| Adjustable equaliser | — | Yes |
| Noise control | ||
| Active noise cancelling | Yes | — |
| Battery & charging | ||
| Battery life | 3.5 h | 7 h |
| Charging time | 1 h | 1.5 h |
| Connectivity | ||
| Wireless | Yes | Yes |
| Bluetooth version | 5 | 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) | 5.5 g | 12 g |
| Protection rating | IP54 | — |
| Water resistance (IPx) | IPx4 | — |
| Dust protection (IP) | 5 | — |
| Features | ||
| Hands-free calls | Yes | Yes |
