Description:
Features:
- Analogue Circuit
- Volume Wheel
- ON/OFF Switch
Technical Specitication:
Max Sound output: 129+5dB
Sound Gain: ≥ 48dB
Frequency range (Hz): 300Hz – 4000Hz
Harmonic distortion: ≤10%
Voltage: D.C.1.5V
Input noise: ≤40dB
Battery size: AG13 or A675Zinc Air
Battery drain (mA): ≤5mA