PSB Speakers M4U 1 Passive Headphones M4U 1 Passive Headphones
A variant of PSB Speakers M4U 1 Passive Headphones
| Brand | PSB Speakers |
| Model | M4U 1 Passive Headphones |
| Driver size (mm) | |
| Noise cancelling | |
| Frequency response | 10 Hz – 20000 Hz −10 dB |
| Impedance (Ω) | 32 |
| Battery life (hours) | |
| Bluetooth version | |
| Dust protection (IP code) | |
| Water protection (IP code) | |
| Bluetooth | |
| Height (mm) | 200 |
| Width (mm) | 200 |
| Depth (mm) | 70 |
| Weight (kg) | 0.34 |