Why is 4XD1J77351 better than Life U2i?
4XD1J77351 has no measurable advantages in this pair.
Why is Life U2i better than 4XD1J77351?
- Driver size9 mm vs 10 mm+11%
Specifications
Side by side
| Sound | ||
| Fit | In-ear | Neckband |
| Driver size | 9 mm | 10 mm |
| Lowest frequency | 100 Hz | — |
| Highest frequency | 20,000 Hz | — |
| Impedance | 32 Ω | — |
| Noise control | ||
| Noise reduction for calls | — | Yes |
| Battery & charging | ||
| Battery life | — | 3 h |
| Connectivity | ||
| Wireless | No | — |
| USB-C | Yes | — |
| Design & build | ||
| Protection rating | — | IPX5 |
| Water resistance (IPx) | — | IPx5 |
| Colours | Black | — |
| Features | ||
| Hands-free calls | Yes | — |
