This high-tech AXON F-139 voice amplifier helps improve your quality of life and say goodbye to embarrassing pauses while you struggle to hear what is being said. The product can help you sound clearly and loudly when you see film, watch the match, have a meeting, or classes, etc. In addition, the internal circuit boards make the hearing aid more neat and beautiful. When you wear AXON F-139 hearing aid devices, you will be amazed at the excellent sound with almost no noise or other disturbance. Moreover, the affordable pocket size ear wear style AXON F-139 hearing aids have volume control that you can adjust the sound volume according to your own needs and preference. 

• Help people with hearing impairment to hear sound and voice
  

• Best sound amplifier behind the ear

• Super mini size and light weight, easy and comfortable to wear

• Volume adjustable function

• Anti-shock, anti-drop, moisture proof, high temperature proof

• Silicone earplugs in 3 different sizes, fit most ears

• Note: 
  

• 1, Please don't use the hearing aid at a high volume for a long time.

• 2, Don't use it when swimming or raining, and don't expose the hearing aid under the sun.

Specification:

• Brand: AXON

• Model: F-139

• Power supply: 2 x Cell batteries

• Wearing type: Wireless BTE

• Max sound output: 130 ± 5dB

• Sound gain: ≥ 50dB

• Total harmonic wave distortion: ≤ 5%

• Frequency range: 300 - 4000Hz

• Input noise: ≤ 30dB

• Working voltage: DC 1.5V

• Working current: ≤ 4mA

• Product Weight: 0.008 kg

• Product Size (L x W x H): 4.6 x 4.5 x 1.7cm