This hearing device can be used on either ear. It has a volume/tone adjustment to match the hearing amplification need. The receiver connection cable with one earphone, and attched with different size of earplug.
- 3 earpins
- 2 AA batteries included
- Max. saturated sound pressure: 135dB±5dB
- Full scale sound gain: ≥60dB
- Harmonic distortion: When F<1000Hz, ≤ 15%; When F>1000Hz, ≤ 10%
- Frequency response: 250-4000 Hz
- Equivalent input noise: ≤ 28dB