Specifications:
| General Specification | |
| Brand Name | JUSTNEED |
| Model | M3 |
| Color | Grey， Silver |
| Wearing Type | In-ear |
| Cable Length (m) | 1.2m |
| Technical Parameters | |
| Microphone | Yes |
| Wired Control | Support |
| Plug Type | 3.5mm |
| Unit Diameter | 10mm |
| Sensitivity | 89dB±3dB |
| Impedance | 16Ω±10% |
| Frequency Response | 18Hz-22kHz |
Package Included:
 | 1 x JUSTNEED M3 Wired Control Earphone |
| 3 x Pairs Earmuff (L， M， S) | |
| 1 x Manual |