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| Item | Headphone | 
|---|---|
| Headphone Type | Earbud | 
| Connectivity | Wired | 
| Impedance | 32Ω ± 15% | 
| Sensitivity | 120±2dB | 
| Frequency | 8-22 KHz | 
This QKZ DM7 in-ear stereo earphone has CNC zinc alloy materials, play / pause / answer / off / noise canceling function, 9 mm NdFeB speaker, 3mW rated input power, 32Ω ± 15% impedance, 120±2dB speaker sensitivity, 8-22 KHz frequency response, 20 gm weight.