Name | Specifications | |
Trumpet | Size | 29.8 * 5.6 mm |
Impedance | 300 Ω±10% | |
Rated power | 5 mW | |
Frequency response characteristics | 11 8 ±3db | |
Microphone | Size | 13.8 * 4.3 mm |
Sensitivity | - 69 ±3db | |
Operating Voltage: | 1.5V | |
Type | Supercardioid pointing | |
Microphone |
Active Noise Canceling | - 35 dB |
Battery capacity | Two 5V dry cell batteries | |
Working current | 14mA | |
Continuous working period | 24 H | |