Interview, recording microphone series

Single unit: electrostatic condenser capsule
Directivity: omnidirectional
Frequency Response: 50Hz-18kHz
Sensitivity: -33dB ± 3dB (0dB=1V/Pa at l kHz)
Low frequency attenuation: 60Hz 10dB/octave
Equivalent noise level: 24 dBA
Output Impedance: 1KQ ± 30% (at 1kHz)
Cable length: 5M
Output connection: standard towel 3.5 four-pole plug output
Use voltage: built-in 3.7V/100MAH lithium battery power consumption ≤ 2mA (typical value)
Battery life: 45-50 hours of continuous use when fully charged