Why is 4XD1J77351 better than Bullets Wireless Z3?
4XD1J77351 has no measurable advantages in this pair.
Why is Bullets Wireless Z3 better than 4XD1J77351?
Bullets Wireless Z3 has no measurable advantages in this pair.
Specifications
Side by side
| Sound | ||
| Fit | In-ear | Neckband |
| Ear cup design | — | Closed-back |
| Driver type | — | Dynamic |
| Driver size | 9 mm | — |
| Lowest frequency | 100 Hz | — |
| Highest frequency | 20,000 Hz | — |
| Impedance | 32 Ω | — |
| Spatial / 3D audio | — | Yes |
| Adjustable equaliser | — | Yes |
| Noise control | ||
| Noise reduction for calls | — | Yes |
| Battery & charging | ||
| Battery life | — | 36 h |
| Fast charging support | — | Yes |
| Connectivity | ||
| Wireless | No | Yes |
| Bluetooth version | — | 5.4 |
| USB-C | Yes | — |
| Design & build | ||
| Protection rating | — | IP55 |
| Water resistance (IPx) | — | IPx5 |
| Dust protection (IP) | — | 5 |
| Colours | Black | — |
| Features | ||
| Hands-free calls | Yes | — |
