Why is Chu II better than Bullets Wireless Z3?
Chu II has no measurable advantages in this pair.
Why is Bullets Wireless Z3 better than Chu II?
Bullets Wireless Z3 has no measurable advantages in this pair.
Specifications
Side by side
| Sound | ||
| Fit | In-ear | Neckband |
| Ear cup design | Closed-back | Closed-back |
| Driver type | Dynamic | Dynamic |
| Driver size | 10 mm | — |
| Number of drivers | 1 | — |
| Lowest frequency | 20 Hz | — |
| Highest frequency | 20,000 Hz | — |
| Impedance | 280 Ω | — |
| Sensitivity | 120 dB | — |
| 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 |
| 3.5 mm jack / AUX | Yes | — |
| Design & build | ||
| Protection rating | — | IP55 |
| Water resistance (IPx) | — | IPx5 |
| Dust protection (IP) | — | 5 |









