Personal Sound Amplifier

- Lightweight and small
- Clear sound quality
- Fits in almost any pocket
- Easy to use
- 57dB ambient sound gain
- Stainless steel belt clip
- Built-in-microphone and earphones included
- Volume control
- Battery: 1 x AAA (included)
- Max. sound output: ≤ 130 + 5dB
- Max. sound gain: 57dB ± 5dB
- Harmonic wave distortion: ≤ 10%
- Frequency range: 450~3500Hz
- Input noise: ≤ 30dB
- Working voltage: DC 1.5V
- Working current: ≤ 4mA