Features: 
Microphone and Speaker Both
Dynamic

| Characteristic | Minimum | Typical | Maximum | Notes | 
| Directivity | Unidirectional | |||
| Type | Magnetic | |||
| Sensitivity dB | -69 | 0dB=1v/Pa 1KHz | ||
| Frequency kHz | 0.5 | 1 | 5 | see response curve | 
Characteristic Response: 

Dimension Drawing: 

After below every test item the sensitivity to be within ±3dB from initial sensitivity for unit.

