Standard Features
Attractive smallest design.
Less noise, fine fidelity and tone.
Ultra-light weight.
With volume adjustment switch.
Max Sound Output: 125dB
Sound Gain: >40dB
Total Harmonic Wave Distortion: <5%
Frequency Range: 250---3800Hz
Input Noise: <28dB
Voltage: 1.5V
Current: 2mA
Battery:AG5/ A13 Button Cell
Estimated Battery Life: Over 144 hours
With ON/OFF switch.
Max Sound Output: 120dB
Sound Gain: >35dB
Frequency Range: 350---4500Hz
Input Noise: <50dB
Voltage: 1.2V
Current: 1.5mA
Voltage: 1.5V /1.3V
Battery: AG5/ A13 Button Cell
Voltage: 1.5V/1.3V
Frequency Range: 350----4500Hz
Voltage: 1.5V /1.3 V
Frequency Range: 250----3800Hz