Axon 5-Mode Syrinx Hearing Aid/Voice Amplifier (1*AG13)
Model: AXON X-818 - 5 levels of volume control - Comes with 3 differently sized ear pads - Powered by 1 x AG13 battery ( sold separately ) - Maximum loudness 130 +/- 5dB - Sensitivity: >= 50dB - Frequency response: 300Hz ~ 4000Hz - Noise: <= 30dB - Comes in retail packaging