Model: F-139
Step less Adjustable volume
Powered by 1 x AG13 battery
Maximum loudness 129dB±4B
Loudness gain: more than 38dB
Working Frequency: 450~3500Hz
Harmonic distortion: Equivalent to input noise
Package includes:
– 1 x Hearing aid
– 2 x AG13 battery
– 3 x Ear buds in different sizes
– 1 x Protective casing
– 1 x English user’s manual
Bought from DX.com
Music:
“Snooter” by Josh Woodward
http://www.joshwoodward.com/
All songs licensed under a Creative Commons Attribution 3.0 US License.
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OK where can you find these and how much $?
Hi does these work and does it have a background noise reduction?
you can buy them on eBay for less then 10 dollars