AXON V-99 Hearing Aid Sound Amplifier Portable Divice Black

Features N-H Switch On/Off switch Volume Control Aluminium Alloy cover Without grating sound For people with severe hearing loss The scope of application of gas conduction hearing disorders This hearing aid is packaged in a nice retail box which is perfect for retailling Specifications Max sound output ¡Ý129¡À4 dB Max Sound Gain 58dB ¡À 5dB Harmonic Wave Distortion f<1000Hz¡Ü15%, f>1000Hz¡Ü10% Input Noise ¡Ü30 dB Frequency Range 450~3500 hz Voltage 1.5V Current ¡Ü5 mA Size 6.1x4.1x1.6 cm Net Weight About 46g Bettery 1 AAA Battery(not included) Package Includes 1 x V-99 Hearing Aid 1 x Earphone 3 x Earplug 1 x English User Manual Package Includes 1, If you hear the whistling sound, please make sure if you put the earplug tightly, or if you use a appropriate size earplug.2, Please take out the battery or turn off the hearing aid when you stop to use it.3, This product is not waterproof.4, If water enter the sound amplifier, remove the battery and place t